39980925 has 48 divisors (see below), whose sum is σ = 74727360. Its totient is φ = 20952000.

The previous prime is 39980893. The next prime is 39980929. The reversal of 39980925 is 52908993.

39980925 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 39980925 - 2⁵ = 39980893 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 (39980929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40690 + ... + 41660.

It is an arithmetic number, because the mean of its divisors is an integer number (1556820).

Almost surely, 2^39980925 is an apocalyptic number.

It is an amenable number.

39980925 is a deficient number, since it is larger than the sum of its proper divisors (34746435).

39980925 is a wasteful number, since it uses less digits than its factorization.

39980925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 39980925 is about 6323.0471293515. The cubic root of 39980925 is about 341.9408177063.

The spelling of 39980925 in words is "thirty-nine million, nine hundred eighty thousand, nine hundred twenty-five".