28153370700625 has 15 divisors (see below), whose sum is σ = 35180617786941. Its totient is φ = 22522590441000.

The previous prime is 28153370700563. The next prime is 28153370700649. The reversal of 28153370700625 is 52600707335182.

The square root of 28153370700625 is 5305975.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 2207224262929 + 25946146437696 = 1485673^2 + 5093736^2 .

It is not a de Polignac number, because 28153370700625 - 2⁹ = 28153370700113 is a prime.

It is a super-2 number, since 2×28153370700625² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 132543256 + ... + 132755494.

Almost surely, 2^{28153370700625} is an apocalyptic number.

28153370700625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28153370700625 is the 5305975-th square number.

28153370700625 is the 2652988-th centered octagonal number.

It is an amenable number.

28153370700625 is a deficient number, since it is larger than the sum of its proper divisors (7027247086316).

28153370700625 is an frugal number, since it uses more digits than its factorization.

28153370700625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424498 (or 212244 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 28153370700625 in words is "twenty-eight trillion, one hundred fifty-three billion, three hundred seventy million, seven hundred thousand, six hundred twenty-five".