25316421816960 has 128 divisors (see below), whose sum is σ = 89662327329600. Its totient is φ = 6751045813248.

The previous prime is 25316421816941. The next prime is 25316421817003. The reversal of 25316421816960 is 6961812461352.

25316421816960 is a `hidden beast` number, since 2 + 53 + 1 + 6 + 421 + 8 + 169 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×25316421816960² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 25316421816897 and 25316421816906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732518074 + ... + 732552633.

Almost surely, 2^{25316421816960} is an apocalyptic number.

25316421816960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25316421816960 is an abundant number, since it is smaller than the sum of its proper divisors (64345905512640).

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

25316421816960 is a wasteful number, since it uses less digits than its factorization.

25316421816960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465070735 (or 1465070717 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 25316421816960 in words is "twenty-five trillion, three hundred sixteen billion, four hundred twenty-one million, eight hundred sixteen thousand, nine hundred sixty".