187868125 has 10 divisors (see below), whose sum is σ = 234760790. Its totient is φ = 150294000.

The previous prime is 187868113. The next prime is 187868137. The reversal of 187868125 is 521868781.

It is an interprime number because it is at equal distance from previous prime (187868113) and next prime (187868137).

It can be written as a sum of positive squares in 5 ways, for example, as 55756089 + 132112036 = 7467^2 + 11494^2 .

It is not a de Polignac number, because 187868125 - 2¹³ = 187859933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 149670 + ... + 150919.

It is an arithmetic number, because the mean of its divisors is an integer number (23476079).

Almost surely, 2^187868125 is an apocalyptic number.

It is an amenable number.

187868125 is a deficient number, since it is larger than the sum of its proper divisors (46892665).

187868125 is an frugal number, since it uses more digits than its factorization.

187868125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300609 (or 300594 counting only the distinct ones).

The product of its digits is 215040, while the sum is 46.

The square root of 187868125 is about 13706.4993707365. The cubic root of 187868125 is about 572.7314523428.

The spelling of 187868125 in words is "one hundred eighty-seven million, eight hundred sixty-eight thousand, one hundred twenty-five".