22500457 has 8 divisors (see below), whose sum is σ = 26240000. Its totient is φ = 19285812.

The previous prime is 22500449. The next prime is 22500493. The reversal of 22500457 is 75400522.

It is not a de Polignac number, because 22500457 - 2³ = 22500449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22500437) 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 7 ways as a sum of consecutive naturals, for example, 32457 + ... + 33142.

It is an arithmetic number, because the mean of its divisors is an integer number (3280000).

Almost surely, 2^22500457 is an apocalyptic number.

It is an amenable number.

22500457 is a deficient number, since it is larger than the sum of its proper divisors (3739543).

22500457 is an frugal number, since it uses more digits than its factorization.

22500457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65620 (or 65606 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 22500457 is about 4743.4646620377. The cubic root of 22500457 is about 282.3127200001.

Adding to 22500457 its reverse (75400522), we get a palindrome (97900979).

The spelling of 22500457 in words is "twenty-two million, five hundred thousand, four hundred fifty-seven".