25289680460 has 24 divisors (see below), whose sum is σ = 57936359376. Its totient is φ = 9196247360.

The previous prime is 25289680441. The next prime is 25289680487. The reversal of 25289680460 is 6408698252.

It is a junction number, because it is equal to n+sod(n) for n = 25289680399 and 25289680408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57476327 + ... + 57476766.

It is an arithmetic number, because the mean of its divisors is an integer number (2414014974).

Almost surely, 2^25289680460 is an apocalyptic number.

25289680460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25289680460 is an abundant number, since it is smaller than the sum of its proper divisors (32646678916).

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

25289680460 is a wasteful number, since it uses less digits than its factorization.

25289680460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114953113 (or 114953111 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 25289680460 in words is "twenty-five billion, two hundred eighty-nine million, six hundred eighty thousand, four hundred sixty".