25135174725 has 48 divisors (see below), whose sum is σ = 42012257472. Its totient is φ = 13258920960.

The previous prime is 25135174723. The next prime is 25135174741. The reversal of 25135174725 is 52747153152.

It is a happy number.

It is not a de Polignac number, because 25135174725 - 2¹ = 25135174723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25135174723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5880189 + ... + 5884461.

It is an arithmetic number, because the mean of its divisors is an integer number (875255364).

Almost surely, 2^25135174725 is an apocalyptic number.

25135174725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25135174725 is a deficient number, since it is larger than the sum of its proper divisors (16877082747).

25135174725 is a wasteful number, since it uses less digits than its factorization.

25135174725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126 (or 5121 counting only the distinct ones).

The product of its digits is 294000, while the sum is 42.

The spelling of 25135174725 in words is "twenty-five billion, one hundred thirty-five million, one hundred seventy-four thousand, seven hundred twenty-five".