19764925 has 12 divisors (see below), whose sum is σ = 24581140. Its totient is φ = 15765120.

The previous prime is 19764923. The next prime is 19764929. The reversal of 19764925 is 52946791.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 737881 + 19027044 = 859^2 + 4362^2 .

It is not a de Polignac number, because 19764925 - 2¹ = 19764923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19764923) 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, 9259 + ... + 11191.

Almost surely, 2^19764925 is an apocalyptic number.

It is an amenable number.

19764925 is a deficient number, since it is larger than the sum of its proper divisors (4816215).

19764925 is a wasteful number, since it uses less digits than its factorization.

19764925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352 (or 2347 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 19764925 is about 4445.7760852297. The cubic root of 19764925 is about 270.3740813844.

The spelling of 19764925 in words is "nineteen million, seven hundred sixty-four thousand, nine hundred twenty-five".