25605752046 has 32 divisors (see below), whose sum is σ = 58535343360. Its totient is φ = 7314940416.

The previous prime is 25605751991. The next prime is 25605752057. The reversal of 25605752046 is 64025750652.

It is a super-2 number, since 2×25605752046² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 25605751989 and 25605752007.

It is a congruent number.

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, 308110 + ... + 382286.

It is an arithmetic number, because the mean of its divisors is an integer number (1829229480).

Almost surely, 2^25605752046 is an apocalyptic number.

25605752046 is an abundant number, since it is smaller than the sum of its proper divisors (32929591314).

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

25605752046 is a wasteful number, since it uses less digits than its factorization.

25605752046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82408.

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 25605752046 in words is "twenty-five billion, six hundred five million, seven hundred fifty-two thousand, forty-six".