25133256500 has 48 divisors (see below), whose sum is σ = 59881139136. Its totient is φ = 9139364000.

The previous prime is 25133256431. The next prime is 25133256517. The reversal of 25133256500 is 565233152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2279342 + ... + 2290341.

It is an arithmetic number, because the mean of its divisors is an integer number (1247523732).

Almost surely, 2^25133256500 is an apocalyptic number.

25133256500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25133256500 is an abundant number, since it is smaller than the sum of its proper divisors (34747882636).

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

25133256500 is a wasteful number, since it uses less digits than its factorization.

25133256500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569713 (or 4569701 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 25133256500 its reverse (565233152), we get a palindrome (25698489652).

The spelling of 25133256500 in words is "twenty-five billion, one hundred thirty-three million, two hundred fifty-six thousand, five hundred".