25253891537500 has 72 divisors (see below), whose sum is σ = 57021267655296. Its totient is φ = 9775699800000.

The previous prime is 25253891537491. The next prime is 25253891537549. The reversal of 25253891537500 is 573519835252.

It is a super-2 number, since 2×25253891537500² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32198167 + ... + 32973166.

It is an arithmetic number, because the mean of its divisors is an integer number (791962050768).

Almost surely, 2^{25253891537500} is an apocalyptic number.

25253891537500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25253891537500 is an abundant number, since it is smaller than the sum of its proper divisors (31767376117796).

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

25253891537500 is an equidigital number, since it uses as much as digits as its factorization.

25253891537500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65171393 (or 65171371 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 55.

The spelling of 25253891537500 in words is "twenty-five trillion, two hundred fifty-three billion, eight hundred ninety-one million, five hundred thirty-seven thousand, five hundred".