25244869428 has 48 divisors (see below), whose sum is σ = 65591151360. Its totient is φ = 8396764992.

The previous prime is 25244869421. The next prime is 25244869439. The reversal of 25244869428 is 82496844252.

25244869428 is a `hidden beast` number, since 2 + 52 + 4 + 486 + 94 + 28 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25244869421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202425 + ... + 302432.

It is an arithmetic number, because the mean of its divisors is an integer number (1366482320).

Almost surely, 2^25244869428 is an apocalyptic number.

It is an amenable number.

25244869428 is an abundant number, since it is smaller than the sum of its proper divisors (40346281932).

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

25244869428 is a wasteful number, since it uses less digits than its factorization.

25244869428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505333 (or 505325 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 54.

The spelling of 25244869428 in words is "twenty-five billion, two hundred forty-four million, eight hundred sixty-nine thousand, four hundred twenty-eight".