168870025 has 27 divisors (see below), whose sum is σ = 220853269. Its totient is φ = 128078720.

The previous prime is 168870019. The next prime is 168870029. The reversal of 168870025 is 520078861.

The square root of 168870025 is 12995.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 85914361 + 82955664 = 9269^2 + 9108^2 .

It is not a de Polignac number, because 168870025 - 2³ = 168870017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168870029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1494369 + ... + 1494481.

Almost surely, 2^168870025 is an apocalyptic number.

168870025 is the 12995-th square number.

168870025 is the 6498-th centered octagonal number.

It is an amenable number.

168870025 is a deficient number, since it is larger than the sum of its proper divisors (51983244).

168870025 is an equidigital number, since it uses as much as digits as its factorization.

168870025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The cubic root of 168870025 is about 552.7357088222.

The spelling of 168870025 in words is "one hundred sixty-eight million, eight hundred seventy thousand, twenty-five".