Search a number
-
+
2783090025 = 325235172
BaseRepresentation
bin1010010111100010…
…1001010101101001
321011221212121210100
42211320221111221
521144432340100
61140055140013
7125652606042
oct24570512551
97157777710
102783090025
1111a8a88801
12658074609
13354789441
141c58a18c9
151144e9400
hexa5e29569

2783090025 has 27 divisors (see below), whose sum is σ = 4986241221. Its totient is φ = 1483892640.

The previous prime is 2783089993. The next prime is 2783090027. The reversal of 2783090025 is 5200903872.

It is a happy number.

The square root of 2783090025 is 52755.

It is a perfect power (a square), and thus also a powerful number.

2783090025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 506655081 + 2276434944 = 22509^2 + 47712^2 .

It is not a de Polignac number, because 2783090025 - 25 = 2783089993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2783090027) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 789567 + ... + 793083.

Almost surely, 22783090025 is an apocalyptic number.

2783090025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2783090025 is the 52755-th square number.

2783090025 is the 26378-th centered octagonal number.

It is an amenable number.

2783090025 is a deficient number, since it is larger than the sum of its proper divisors (2203151196).

2783090025 is an frugal number, since it uses more digits than its factorization.

2783090025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050 (or 3525 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The cubic root of 2783090025 is about 1406.6166427696.

Multiplying 2783090025 by its sum of digits (36), we get a square (100191240900 = 3165302).

Adding to 2783090025 its reverse (5200903872), we get a palindrome (7983993897).

It can be divided in two parts, 27830 and 90025, that added together give a triangular number (117855 = T485).

The spelling of 2783090025 in words is "two billion, seven hundred eighty-three million, ninety thousand, twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 3517 10551 17585 31653 52755 87925 158265 263775 791325 12369289 37107867 61846445 111323601 185539335 309232225 556618005 927696675 2783090025