25025252500 has 30 divisors (see below), whose sum is σ = 54725227634. Its totient is φ = 10010100000.

The previous prime is 25025252423. The next prime is 25025252563. The reversal of 25025252500 is 525252052.

It can be written as a sum of positive squares in 5 ways, for example, as 14430255876 + 10594996624 = 120126^2 + 102932^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5002551 + ... + 5007550.

Almost surely, 2^25025252500 is an apocalyptic number.

25025252500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25025252500 is an abundant number, since it is smaller than the sum of its proper divisors (29699975134).

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

25025252500 is a wasteful number, since it uses less digits than its factorization.

25025252500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010125 (or 10010108 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The spelling of 25025252500 in words is "twenty-five billion, twenty-five million, two hundred fifty-two thousand, five hundred".