22521452345 has 16 divisors (see below), whose sum is σ = 31951618560. Its totient is φ = 14910753984.

The previous prime is 22521452323. The next prime is 22521452413. The reversal of 22521452345 is 54325412522.

It is a happy number.

It is not a de Polignac number, because 22521452345 - 2¹⁶ = 22521386809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11093297 + ... + 11095326.

It is an arithmetic number, because the mean of its divisors is an integer number (1996976160).

Almost surely, 2^22521452345 is an apocalyptic number.

It is an amenable number.

22521452345 is a deficient number, since it is larger than the sum of its proper divisors (9430166215).

22521452345 is a wasteful number, since it uses less digits than its factorization.

22521452345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22188664.

The product of its digits is 96000, while the sum is 35.

Adding to 22521452345 its reverse (54325412522), we get a palindrome (76846864867).

The spelling of 22521452345 in words is "twenty-two billion, five hundred twenty-one million, four hundred fifty-two thousand, three hundred forty-five".