19690925 has 12 divisors (see below), whose sum is σ = 24477600. Its totient is φ = 15713520.

The previous prime is 19690901. The next prime is 19690933. The reversal of 19690925 is 52909691.

It is not a de Polignac number, because 19690925 - 2¹⁴ = 19674541 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13376 + ... + 14774.

It is an arithmetic number, because the mean of its divisors is an integer number (2039800).

Almost surely, 2^19690925 is an apocalyptic number.

It is an amenable number.

19690925 is a deficient number, since it is larger than the sum of its proper divisors (4786675).

19690925 is a wasteful number, since it uses less digits than its factorization.

19690925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1967 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 19690925 is about 4437.4457743166. The cubic root of 19690925 is about 270.0362319919.

The spelling of 19690925 in words is "nineteen million, six hundred ninety thousand, nine hundred twenty-five".