25734642725 has 24 divisors (see below), whose sum is σ = 34915378368. Its totient is φ = 18660499200.

The previous prime is 25734642697. The next prime is 25734642737. The reversal of 25734642725 is 52724643752.

It is not a de Polignac number, because 25734642725 - 2²² = 25730448421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25734642725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46169 + ... + 231518.

It is an arithmetic number, because the mean of its divisors is an integer number (1454807432).

Almost surely, 2^25734642725 is an apocalyptic number.

25734642725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25734642725 is a deficient number, since it is larger than the sum of its proper divisors (9180735643).

25734642725 is a wasteful number, since it uses less digits than its factorization.

25734642725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278045 (or 278040 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 47.

The spelling of 25734642725 in words is "twenty-five billion, seven hundred thirty-four million, six hundred forty-two thousand, seven hundred twenty-five".