25057286420 has 12 divisors (see below), whose sum is σ = 52620301524. Its totient is φ = 10022914560.

The previous prime is 25057286389. The next prime is 25057286447. The reversal of 25057286420 is 2468275052.

It can be written as a sum of positive squares in 2 ways, for example, as 14818679824 + 10238606596 = 121732^2 + 101186^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626432141 + ... + 626432180.

It is an arithmetic number, because the mean of its divisors is an integer number (4385025127).

Almost surely, 2^25057286420 is an apocalyptic number.

25057286420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25057286420 is an abundant number, since it is smaller than the sum of its proper divisors (27563015104).

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

25057286420 is a wasteful number, since it uses less digits than its factorization.

25057286420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252864330 (or 1252864328 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 25057286420 in words is "twenty-five billion, fifty-seven million, two hundred eighty-six thousand, four hundred twenty".