Search a number
-
+
40210025 = 521608401
BaseRepresentation
bin1001100101100…
…0111001101001
32210122212210012
42121120321221
540243210100
63553501305
7665531252
oct231307151
983585705
1040210025
1120774429
1211571835
13843b31b
1454a9b29
1537e4135
hex2658e69

40210025 has 6 divisors (see below), whose sum is σ = 49860462. Its totient is φ = 32168000.

The previous prime is 40209989. The next prime is 40210039. The reversal of 40210025 is 52001204.

40210025 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 3 ways, for example, as 8219689 + 31990336 = 2867^2 + 5656^2 .

It is not a de Polignac number, because 40210025 - 212 = 40205929 is a prime.

It is a super-2 number, since 2×402100252 = 3233692221001250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40209991 and 40210009.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 804176 + ... + 804225.

It is an arithmetic number, because the mean of its divisors is an integer number (8310077).

Almost surely, 240210025 is an apocalyptic number.

It is an amenable number.

40210025 is a deficient number, since it is larger than the sum of its proper divisors (9650437).

40210025 is a wasteful number, since it uses less digits than its factorization.

40210025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608411 (or 1608406 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 40210025 is about 6341.1375162505. The cubic root of 40210025 is about 342.5927076013.

Adding to 40210025 its reverse (52001204), we get a palindrome (92211229).

The spelling of 40210025 in words is "forty million, two hundred ten thousand, twenty-five".

Divisors: 1 5 25 1608401 8042005 40210025