38972925 has 72 divisors (see below), whose sum is σ = 77298624. Its totient is φ = 18670080.

The previous prime is 38972911. The next prime is 38972929. The reversal of 38972925 is 52927983.

It is not a de Polignac number, because 38972925 - 2⁹ = 38972413 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38972929) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 87754 + ... + 88196.

It is an arithmetic number, because the mean of its divisors is an integer number (1073592).

Almost surely, 2^38972925 is an apocalyptic number.

It is an amenable number.

38972925 is a deficient number, since it is larger than the sum of its proper divisors (38325699).

38972925 is a wasteful number, since it uses less digits than its factorization.

38972925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 491 counting only the distinct ones).

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

The square root of 38972925 is about 6242.8298871585. The cubic root of 38972925 is about 339.0426500233.

The spelling of 38972925 in words is "thirty-eight million, nine hundred seventy-two thousand, nine hundred twenty-five".