25197590560 has 24 divisors (see below), whose sum is σ = 59529308076. Its totient is φ = 10079036160.

The previous prime is 25197590549. The next prime is 25197590581. The reversal of 25197590560 is 6509579152.

It can be written as a sum of positive squares in 2 ways, for example, as 25107036304 + 90554256 = 158452^2 + 9516^2 .

It is a super-2 number, since 2×25197590560² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78742311 + ... + 78742630.

Almost surely, 2^25197590560 is an apocalyptic number.

25197590560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25197590560 is an abundant number, since it is smaller than the sum of its proper divisors (34331717516).

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

25197590560 is a wasteful number, since it uses less digits than its factorization.

25197590560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157484956 (or 157484948 counting only the distinct ones).

The product of its (nonzero) digits is 850500, while the sum is 49.

The spelling of 25197590560 in words is "twenty-five billion, one hundred ninety-seven million, five hundred ninety thousand, five hundred sixty".