22502545 has 32 divisors (see below), whose sum is σ = 30425472. Its totient is φ = 15869952.

The previous prime is 22502531. The next prime is 22502551. The reversal of 22502545 is 54520522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22502545 - 2¹¹ = 22500497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 231937 + ... + 232033.

It is an arithmetic number, because the mean of its divisors is an integer number (950796).

Almost surely, 2^22502545 is an apocalyptic number.

It is an amenable number.

22502545 is a deficient number, since it is larger than the sum of its proper divisors (7922927).

22502545 is a wasteful number, since it uses less digits than its factorization.

22502545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 22502545 is about 4743.6847492219. The cubic root of 22502545 is about 282.3214524261.

The spelling of 22502545 in words is "twenty-two million, five hundred two thousand, five hundred forty-five".