136865025 has 48 divisors (see below), whose sum is σ = 274297920. Its totient is φ = 66355200.

The previous prime is 136865009. The next prime is 136865033. The reversal of 136865025 is 520568631.

It is not a de Polignac number, because 136865025 - 2⁴ = 136865009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1792 + ... + 16641.

It is an arithmetic number, because the mean of its divisors is an integer number (5714540).

Almost surely, 2^136865025 is an apocalyptic number.

136865025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136865025 is an abundant number, since it is smaller than the sum of its proper divisors (137432895).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136865025 is a wasteful number, since it uses less digits than its factorization.

136865025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18463 (or 18452 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 136865025 is about 11698.9326436218. The cubic root of 136865025 is about 515.3443199671.

The spelling of 136865025 in words is "one hundred thirty-six million, eight hundred sixty-five thousand, twenty-five".