19972625 has 16 divisors (see below), whose sum is σ = 26013312. Its totient is φ = 15281200.

The previous prime is 19972613. The next prime is 19972639. The reversal of 19972625 is 52627991.

It is not a de Polignac number, because 19972625 - 2⁸ = 19972369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599 + ... + 6348.

It is an arithmetic number, because the mean of its divisors is an integer number (1625832).

Almost surely, 2^19972625 is an apocalyptic number.

It is an amenable number.

19972625 is a deficient number, since it is larger than the sum of its proper divisors (6040687).

19972625 is an equidigital number, since it uses as much as digits as its factorization.

19972625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985 (or 6975 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 19972625 is about 4469.0742889328. The cubic root of 19972625 is about 271.3178598083.

The spelling of 19972625 in words is "nineteen million, nine hundred seventy-two thousand, six hundred twenty-five".