38686925 has 6 divisors (see below), whose sum is σ = 47971818. Its totient is φ = 30949520.

The previous prime is 38686919. The next prime is 38686927. The reversal of 38686925 is 52968683.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11417641 + 27269284 = 3379^2 + 5222^2 .

It is not a de Polignac number, because 38686925 - 2¹⁶ = 38621389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38686925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38686927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 773714 + ... + 773763.

It is an arithmetic number, because the mean of its divisors is an integer number (7995303).

Almost surely, 2^38686925 is an apocalyptic number.

It is an amenable number.

38686925 is a deficient number, since it is larger than the sum of its proper divisors (9284893).

38686925 is a wasteful number, since it uses less digits than its factorization.

38686925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547487 (or 1547482 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 38686925 is about 6219.8814297380. The cubic root of 38686925 is about 338.2112663312.

The spelling of 38686925 in words is "thirty-eight million, six hundred eighty-six thousand, nine hundred twenty-five".