25245575368 has 16 divisors (see below), whose sum is σ = 50976642780. Its totient is φ = 11651803968.

The previous prime is 25245575357. The next prime is 25245575371. The reversal of 25245575368 is 86357554252.

It can be written as a sum of positive squares in 2 ways, for example, as 24844694884 + 400880484 = 157622^2 + 20022^2 .

It is a super-2 number, since 2×25245575368² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 121372855 + ... + 121373062.

Almost surely, 2^25245575368 is an apocalyptic number.

It is an amenable number.

25245575368 is an abundant number, since it is smaller than the sum of its proper divisors (25731067412).

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

25245575368 is a wasteful number, since it uses less digits than its factorization.

25245575368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242745936 (or 242745932 counting only the distinct ones).

The product of its digits is 10080000, while the sum is 52.

The spelling of 25245575368 in words is "twenty-five billion, two hundred forty-five million, five hundred seventy-five thousand, three hundred sixty-eight".