102855125 has 16 divisors (see below), whose sum is σ = 129558000. Its totient is φ = 81518400.

The previous prime is 102855091. The next prime is 102855143. The reversal of 102855125 is 521558201.

It can be written as a sum of positive squares in 8 ways, for example, as 10195249 + 92659876 = 3193^2 + 9626^2 .

It is not a de Polignac number, because 102855125 - 2⁶ = 102855061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9851 + ... + 17399.

It is an arithmetic number, because the mean of its divisors is an integer number (8097375).

Almost surely, 2^102855125 is an apocalyptic number.

It is an amenable number.

102855125 is a deficient number, since it is larger than the sum of its proper divisors (26702875).

102855125 is an equidigital number, since it uses as much as digits as its factorization.

102855125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7673 (or 7663 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 102855125 is about 10141.7515745556. The cubic root of 102855125 is about 468.5349354166.

The spelling of 102855125 in words is "one hundred two million, eight hundred fifty-five thousand, one hundred twenty-five".