28180374125 has 16 divisors (see below), whose sum is σ = 35200766640. Its totient is φ = 22524004800.

The previous prime is 28180374049. The next prime is 28180374151. The reversal of 28180374125 is 52147308182.

It can be written as a sum of positive squares in 8 ways, for example, as 20435846116 + 7744528009 = 142954^2 + 88003^2 .

It is not a de Polignac number, because 28180374125 - 2⁸ = 28180373869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38711 + ... + 240539.

It is an arithmetic number, because the mean of its divisors is an integer number (2200047915).

Almost surely, 2^28180374125 is an apocalyptic number.

28180374125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28180374125 is a deficient number, since it is larger than the sum of its proper divisors (7020392515).

28180374125 is a wasteful number, since it uses less digits than its factorization.

28180374125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202961 (or 202951 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 28180374125 in words is "twenty-eight billion, one hundred eighty million, three hundred seventy-four thousand, one hundred twenty-five".