22502007 has 18 divisors (see below), whose sum is σ = 35728056. Its totient is φ = 13636920.

The previous prime is 22502003. The next prime is 22502021. The reversal of 22502007 is 70020522.

It is a happy number.

It is not a de Polignac number, because 22502007 - 2² = 22502003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22502003) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9243 + ... + 11420.

It is an arithmetic number, because the mean of its divisors is an integer number (1984892).

Almost surely, 2^22502007 is an apocalyptic number.

22502007 is a deficient number, since it is larger than the sum of its proper divisors (13226049).

22502007 is a wasteful number, since it uses less digits than its factorization.

22502007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20691 (or 20677 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 22502007 is about 4743.6280419105. The cubic root of 22502007 is about 282.3192024561.

Adding to 22502007 its reverse (70020522), we get a palindrome (92522529).

The spelling of 22502007 in words is "twenty-two million, five hundred two thousand, seven".