25398796900 has 27 divisors (see below), whose sum is σ = 55118847819. Its totient is φ = 10158881280.

The previous prime is 25398796879. The next prime is 25398796921. The reversal of 25398796900 is 969789352.

The square root of 25398796900 is 159370.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (25398796879) and next prime (25398796921).

It can be written as a sum of positive squares in 4 ways, for example, as 107619876 + 25291177024 = 10374^2 + 159032^2 .

It is a super-2 number, since 2×25398796900² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1585732 + ... + 1601668.

Almost surely, 2^25398796900 is an apocalyptic number.

25398796900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

25398796900 is the 159370-th square number.

It is an amenable number.

25398796900 is an abundant number, since it is smaller than the sum of its proper divisors (29720050919).

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

25398796900 is an frugal number, since it uses more digits than its factorization.

25398796900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31888 (or 15944 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 25398796900 in words is "twenty-five billion, three hundred ninety-eight million, seven hundred ninety-six thousand, nine hundred".