Search a number
-
+
24988025 = 52999521
BaseRepresentation
bin101111101010…
…0100101111001
31202000112010102
41133110211321
522344104100
62251325145
7422252246
oct137244571
952015112
1024988025
1113117967
1284507b5
13523b91a
1434665cd
1522d8cd5
hex17d4979

24988025 has 6 divisors (see below), whose sum is σ = 30985182. Its totient is φ = 19990400.

The previous prime is 24988013. The next prime is 24988027. The reversal of 24988025 is 52088942.

It can be written as a sum of positive squares in 3 ways, for example, as 3356224 + 21631801 = 1832^2 + 4651^2 .

It is not a de Polignac number, because 24988025 - 24 = 24988009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 24988025.

It is not an unprimeable number, because it can be changed into a prime (24988027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 499736 + ... + 499785.

It is an arithmetic number, because the mean of its divisors is an integer number (5164197).

Almost surely, 224988025 is an apocalyptic number.

24988025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

24988025 is a deficient number, since it is larger than the sum of its proper divisors (5997157).

24988025 is an equidigital number, since it uses as much as digits as its factorization.

24988025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999531 (or 999526 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 24988025 is about 4998.8023565650. The cubic root of 24988025 is about 292.3550795484.

The spelling of 24988025 in words is "twenty-four million, nine hundred eighty-eight thousand, twenty-five".

Divisors: 1 5 25 999521 4997605 24988025