22745905 has 16 divisors (see below), whose sum is σ = 33594624. Its totient is φ = 14397120.

The previous prime is 22745903. The next prime is 22745927. The reversal of 22745905 is 50954722.

It is not a de Polignac number, because 22745905 - 2¹ = 22745903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22745903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24541 + ... + 25450.

It is an arithmetic number, because the mean of its divisors is an integer number (2099664).

Almost surely, 2^22745905 is an apocalyptic number.

It is an amenable number.

22745905 is a deficient number, since it is larger than the sum of its proper divisors (10848719).

22745905 is a wasteful number, since it uses less digits than its factorization.

22745905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50016.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 22745905 is about 4769.2667151251. The cubic root of 22745905 is about 283.3355532314.

The spelling of 22745905 in words is "twenty-two million, seven hundred forty-five thousand, nine hundred five".