25257015125 has 16 divisors (see below), whose sum is σ = 31991224512. Its totient is φ = 19904029200.

The previous prime is 25257015109. The next prime is 25257015127. The reversal of 25257015125 is 52151075252.

It is not a de Polignac number, because 25257015125 - 2⁴ = 25257015109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25257015127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1499507 + ... + 1516256.

It is an arithmetic number, because the mean of its divisors is an integer number (1999451532).

Almost surely, 2^25257015125 is an apocalyptic number.

25257015125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25257015125 is a deficient number, since it is larger than the sum of its proper divisors (6734209387).

25257015125 is an equidigital number, since it uses as much as digits as its factorization.

25257015125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015845 (or 3015835 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 35.

The spelling of 25257015125 in words is "twenty-five billion, two hundred fifty-seven million, fifteen thousand, one hundred twenty-five".