25645628292 has 48 divisors (see below), whose sum is σ = 61799066112. Its totient is φ = 8268906240.

The previous prime is 25645628263. The next prime is 25645628329. The reversal of 25645628292 is 29282654652.

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, 839478 + ... + 869490.

It is an arithmetic number, because the mean of its divisors is an integer number (1287480544).

Almost surely, 2^25645628292 is an apocalyptic number.

It is an amenable number.

25645628292 is an abundant number, since it is smaller than the sum of its proper divisors (36153437820).

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

25645628292 is a wasteful number, since it uses less digits than its factorization.

25645628292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32348 (or 32346 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 51.

The spelling of 25645628292 in words is "twenty-five billion, six hundred forty-five million, six hundred twenty-eight thousand, two hundred ninety-two".