39381725 has 6 divisors (see below), whose sum is σ = 48833370. Its totient is φ = 31505360.

The previous prime is 39381701. The next prime is 39381731. The reversal of 39381725 is 52718393.

It can be written as a sum of positive squares in 3 ways, for example, as 10876804 + 28504921 = 3298^2 + 5339^2 .

It is not a de Polignac number, because 39381725 - 2¹⁰ = 39380701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 787610 + ... + 787659.

It is an arithmetic number, because the mean of its divisors is an integer number (8138895).

Almost surely, 2^39381725 is an apocalyptic number.

It is an amenable number.

39381725 is a deficient number, since it is larger than the sum of its proper divisors (9451645).

39381725 is a wasteful number, since it uses less digits than its factorization.

39381725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575279 (or 1575274 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 39381725 is about 6275.4860369536. The cubic root of 39381725 is about 340.2239729573.

The spelling of 39381725 in words is "thirty-nine million, three hundred eighty-one thousand, seven hundred twenty-five".