25249866372 has 48 divisors (see below), whose sum is σ = 65493792000. Its totient is φ = 8412613920.

The previous prime is 25249866349. The next prime is 25249866373. The reversal of 25249866372 is 27366894252.

25249866372 is a `hidden beast` number, since 2 + 524 + 9 + 86 + 6 + 37 + 2 = 666.

It is a super-4 number, since 4×25249866372⁴ (a number of 43 digits) contains 4444 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (25249866373) 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, 176629 + ... + 285827.

It is an arithmetic number, because the mean of its divisors is an integer number (1364454000).

Almost surely, 2^25249866372 is an apocalyptic number.

It is an amenable number.

25249866372 is an abundant number, since it is smaller than the sum of its proper divisors (40243925628).

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

25249866372 is a wasteful number, since it uses less digits than its factorization.

25249866372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111353 (or 111345 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 25249866372 in words is "twenty-five billion, two hundred forty-nine million, eight hundred sixty-six thousand, three hundred seventy-two".