25014407728 has 20 divisors (see below), whose sum is σ = 48495623760. Its totient is φ = 12499408064.

The previous prime is 25014407713. The next prime is 25014407731. The reversal of 25014407728 is 82770441052.

It is a super-2 number, since 2×25014407728² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460723 + ... + 512146.

It is an arithmetic number, because the mean of its divisors is an integer number (2424781188).

Almost surely, 2^25014407728 is an apocalyptic number.

It is an amenable number.

25014407728 is a deficient number, since it is larger than the sum of its proper divisors (23481216032).

25014407728 is a wasteful number, since it uses less digits than its factorization.

25014407728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974484 (or 974478 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The spelling of 25014407728 in words is "twenty-five billion, fourteen million, four hundred seven thousand, seven hundred twenty-eight".