25000022728 has 16 divisors (see below), whose sum is σ = 46876757760. Its totient is φ = 12499554000.

The previous prime is 25000022687. The next prime is 25000022777. The reversal of 25000022728 is 82722000052.

It is a super-2 number, since 2×25000022728² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25000022696 and 25000022705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326953 + ... + 396103.

It is an arithmetic number, because the mean of its divisors is an integer number (2929797360).

Almost surely, 2^25000022728 is an apocalyptic number.

It is an amenable number.

25000022728 is a deficient number, since it is larger than the sum of its proper divisors (21876735032).

25000022728 is a wasteful number, since it uses less digits than its factorization.

25000022728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114348 (or 114344 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The spelling of 25000022728 in words is "twenty-five billion, twenty-two thousand, seven hundred twenty-eight".