25500537 has 12 divisors (see below), whose sum is σ = 38435904. Its totient is φ = 16261080.

The previous prime is 25500509. The next prime is 25500539. The reversal of 25500537 is 73500552.

It is not a de Polignac number, because 25500537 - 2²⁴ = 8723321 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 25500537.

It is not an unprimeable number, because it can be changed into a prime (25500539) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 61389 + ... + 61802.

It is an arithmetic number, because the mean of its divisors is an integer number (3202992).

Almost surely, 2^25500537 is an apocalyptic number.

It is an amenable number.

25500537 is a deficient number, since it is larger than the sum of its proper divisors (12935367).

25500537 is a wasteful number, since it uses less digits than its factorization.

25500537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123220 (or 123217 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 25500537 is about 5049.8056398242. The cubic root of 25500537 is about 294.3403319689.

The spelling of 25500537 in words is "twenty-five million, five hundred thousand, five hundred thirty-seven".