22502465 has 4 divisors (see below), whose sum is σ = 27002964. Its totient is φ = 18001968.

The previous prime is 22502461. The next prime is 22502471. The reversal of 22502465 is 56420522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56420522 = 2 ⋅28210261.

It can be written as a sum of positive squares in 2 ways, for example, as 14167696 + 8334769 = 3764^2 + 2887^2 .

It is a cyclic number.

It is not a de Polignac number, because 22502465 - 2² = 22502461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22502461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2250242 + ... + 2250251.

It is an arithmetic number, because the mean of its divisors is an integer number (6750741).

Almost surely, 2^22502465 is an apocalyptic number.

It is an amenable number.

22502465 is a deficient number, since it is larger than the sum of its proper divisors (4500499).

22502465 is an equidigital number, since it uses as much as digits as its factorization.

22502465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500498.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 22502465 is about 4743.6763169508. The cubic root of 22502465 is about 282.3211178603.

Adding to 22502465 its reverse (56420522), we get a palindrome (78922987).

The spelling of 22502465 in words is "twenty-two million, five hundred two thousand, four hundred sixty-five".