157805125 has 8 divisors (see below), whose sum is σ = 196940952. Its totient is φ = 126244000.

The previous prime is 157805119. The next prime is 157805143. The reversal of 157805125 is 521508751.

It can be written as a sum of positive squares in 4 ways, for example, as 101761 + 157703364 = 319^2 + 12558^2 .

It is not a de Polignac number, because 157805125 - 2¹⁵ = 157772357 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 631096 + ... + 631345.

It is an arithmetic number, because the mean of its divisors is an integer number (24617619).

Almost surely, 2^157805125 is an apocalyptic number.

It is an amenable number.

157805125 is a deficient number, since it is larger than the sum of its proper divisors (39135827).

157805125 is an equidigital number, since it uses as much as digits as its factorization.

157805125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262456 (or 1262446 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 157805125 is about 12562.0509870005. The cubic root of 157805125 is about 540.3896650228.

The spelling of 157805125 in words is "one hundred fifty-seven million, eight hundred five thousand, one hundred twenty-five".