239907825 has 144 divisors (see below), whose sum is σ = 497218176. Its totient is φ = 114048000.

The previous prime is 239907817. The next prime is 239907827. The reversal of 239907825 is 528709932.

It is not a de Polignac number, because 239907825 - 2³ = 239907817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239907827) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2375275 + ... + 2375375.

It is an arithmetic number, because the mean of its divisors is an integer number (3452904).

Almost surely, 2^239907825 is an apocalyptic number.

239907825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

239907825 is an abundant number, since it is smaller than the sum of its proper divisors (257310351).

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

239907825 is a wasteful number, since it uses less digits than its factorization.

239907825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 239907825 is about 15488.9581638017. The cubic root of 239907825 is about 621.3669329045.

The spelling of 239907825 in words is "two hundred thirty-nine million, nine hundred seven thousand, eight hundred twenty-five".