25275078463520 has 24 divisors (see below), whose sum is σ = 59712372870444. Its totient is φ = 10110031385344.

The previous prime is 25275078463447. The next prime is 25275078463543. The reversal of 25275078463520 is 2536487057252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25014762178576 + 260316284944 = 5001476^2 + 510212^2 .

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, 78984620039 + ... + 78984620358.

Almost surely, 2^{25275078463520} is an apocalyptic number.

25275078463520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25275078463520 is an abundant number, since it is smaller than the sum of its proper divisors (34437294406924).

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

25275078463520 is a wasteful number, since it uses less digits than its factorization.

25275078463520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157969240412 (or 157969240404 counting only the distinct ones).

The product of its (nonzero) digits is 28224000, while the sum is 56.

The spelling of 25275078463520 in words is "twenty-five trillion, two hundred seventy-five billion, seventy-eight million, four hundred sixty-three thousand, five hundred twenty".