28155995702625 has 32 divisors (see below), whose sum is σ = 53544659261184. Its totient is φ = 12871312320000.

The previous prime is 28155995702561. The next prime is 28155995702641. The reversal of 28155995702625 is 52620759955182.

It is not a de Polignac number, because 28155995702625 - 2⁶ = 28155995702561 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5363044176 + ... + 5363049425.

It is an arithmetic number, because the mean of its divisors is an integer number (1673270601912).

Almost surely, 2^{28155995702625} is an apocalyptic number.

28155995702625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28155995702625 is a deficient number, since it is larger than the sum of its proper divisors (25388663558559).

28155995702625 is a wasteful number, since it uses less digits than its factorization.

28155995702625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10726093626 (or 10726093616 counting only the distinct ones).

The product of its (nonzero) digits is 136080000, while the sum is 66.

The spelling of 28155995702625 in words is "twenty-eight trillion, one hundred fifty-five billion, nine hundred ninety-five million, seven hundred two thousand, six hundred twenty-five".