21925496 has 16 divisors (see below), whose sum is σ = 41177400. Its totient is φ = 10944864.

The previous prime is 21925493. The next prime is 21925511. The reversal of 21925496 is 69452912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21925493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3995 + ... + 7733.

Almost surely, 2^21925496 is an apocalyptic number.

It is an amenable number.

21925496 is a deficient number, since it is larger than the sum of its proper divisors (19251904).

21925496 is a wasteful number, since it uses less digits than its factorization.

21925496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478 (or 4474 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 21925496 is about 4682.4668712122. The cubic root of 21925496 is about 279.8872675434.

The spelling of 21925496 in words is "twenty-one million, nine hundred twenty-five thousand, four hundred ninety-six".