239681825 has 12 divisors (see below), whose sum is σ = 297525228. Its totient is φ = 191539200.

The previous prime is 239681821. The next prime is 239681831. The reversal of 239681825 is 528186932.

It can be written as a sum of positive squares in 6 ways, for example, as 33500944 + 206180881 = 5788^2 + 14359^2 .

It is not a de Polignac number, because 239681825 - 2² = 239681821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239681821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21185 + ... + 30465.

It is an arithmetic number, because the mean of its divisors is an integer number (24793769).

Almost surely, 2^239681825 is an apocalyptic number.

239681825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

239681825 is a deficient number, since it is larger than the sum of its proper divisors (57843403).

239681825 is a wasteful number, since it uses less digits than its factorization.

239681825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10324 (or 10319 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 239681825 is about 15481.6609251075. The cubic root of 239681825 is about 621.1717564919.

The spelling of 239681825 in words is "two hundred thirty-nine million, six hundred eighty-one thousand, eight hundred twenty-five".