19967925 has 12 divisors (see below), whose sum is σ = 33013760. Its totient is φ = 10649520.

The previous prime is 19967881. The next prime is 19967929. The reversal of 19967925 is 52976991.

It is not a de Polignac number, because 19967925 - 2⁸ = 19967669 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19967929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133045 + ... + 133194.

Almost surely, 2^19967925 is an apocalyptic number.

19967925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19967925 is a deficient number, since it is larger than the sum of its proper divisors (13045835).

19967925 is a wasteful number, since it uses less digits than its factorization.

19967925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266252 (or 266247 counting only the distinct ones).

The product of its digits is 306180, while the sum is 48.

The square root of 19967925 is about 4468.5484220270. The cubic root of 19967925 is about 271.2965757761.

The spelling of 19967925 in words is "nineteen million, nine hundred sixty-seven thousand, nine hundred twenty-five".