28600172225725 has 24 divisors (see below), whose sum is σ = 36759350072448. Its totient is φ = 22059097526400.

The previous prime is 28600172225719. The next prime is 28600172225753. The reversal of 28600172225725 is 52752227100682.

It is not a de Polignac number, because 28600172225725 - 2⁵ = 28600172225693 is a prime.

It is a super-2 number, since 2×28600172225725² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181567336 + ... + 181724785.

It is an arithmetic number, because the mean of its divisors is an integer number (1531639586352).

Almost surely, 2^{28600172225725} is an apocalyptic number.

28600172225725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28600172225725 is a deficient number, since it is larger than the sum of its proper divisors (8159177846723).

28600172225725 is a wasteful number, since it uses less digits than its factorization.

28600172225725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363292245 (or 363292240 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 28600172225725 in words is "twenty-eight trillion, six hundred billion, one hundred seventy-two million, two hundred twenty-five thousand, seven hundred twenty-five".