25365021696 has 495 divisors, whose sum is σ = 89240883039. Its totient is φ = 7155412992.

The previous prime is 25365021691. The next prime is 25365021697. The reversal of 25365021696 is 69612056352.

The square root of 25365021696 is 159264.

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

25365021696 is a `hidden beast` number, since 2 + 53 + 6 + 502 + 1 + 6 + 96 = 666.

It is not an unprimeable number, because it can be changed into a prime (25365021691) 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 44 ways as a sum of consecutive naturals, for example, 321076185 + ... + 321076263.

Almost surely, 2^25365021696 is an apocalyptic number.

25365021696 is the 159264-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25365021696

25365021696 is an abundant number, since it is smaller than the sum of its proper divisors (63875861343).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25365021696 is an frugal number, since it uses more digits than its factorization.

25365021696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 25365021696 in words is "twenty-five billion, three hundred sixty-five million, twenty-one thousand, six hundred ninety-six".