25275137500 has 36 divisors (see below), whose sum is σ = 55285852104. Its totient is φ = 10110050000.

The previous prime is 25275137453. The next prime is 25275137519. The reversal of 25275137500 is 573157252.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25275137500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 998506 + ... + 1023505.

It is an arithmetic number, because the mean of its divisors is an integer number (1535718114).

Almost surely, 2^25275137500 is an apocalyptic number.

25275137500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25275137500 is an abundant number, since it is smaller than the sum of its proper divisors (30010714604).

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

25275137500 is an equidigital number, since it uses as much as digits as its factorization.

25275137500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022040 (or 2022018 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 37.

The spelling of 25275137500 in words is "twenty-five billion, two hundred seventy-five million, one hundred thirty-seven thousand, five hundred".