25318537924 has 9 divisors (see below), whose sum is σ = 44307998287. Its totient is φ = 12659109844.

The previous prime is 25318537897. The next prime is 25318537927. The reversal of 25318537924 is 42973581352.

The square root of 25318537924 is 159118.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25318537927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 278457 + ... + 358015.

Almost surely, 2^25318537924 is an apocalyptic number.

25318537924 is the 159118-th square number.

It is an amenable number.

25318537924 is a deficient number, since it is larger than the sum of its proper divisors (18989460363).

25318537924 is an frugal number, since it uses more digits than its factorization.

25318537924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159122 (or 79561 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 49.

Multiplying 25318537924 by its sum of digits (49), we get a square (1240608358276 = 1113826²).

The spelling of 25318537924 in words is "twenty-five billion, three hundred eighteen million, five hundred thirty-seven thousand, nine hundred twenty-four".