22540251653 has 4 divisors (see below), whose sum is σ = 23317501740. Its totient is φ = 21763001568.

The previous prime is 22540251623. The next prime is 22540251691. The reversal of 22540251653 is 35615204522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12319446049 + 10220805604 = 110993^2 + 101098^2 .

It is a cyclic number.

It is not a de Polignac number, because 22540251653 - 2²⁶ = 22473142789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540251623) 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, 388625000 + ... + 388625057.

It is an arithmetic number, because the mean of its divisors is an integer number (5829375435).

Almost surely, 2^22540251653 is an apocalyptic number.

It is an amenable number.

22540251653 is a deficient number, since it is larger than the sum of its proper divisors (777250087).

22540251653 is an equidigital number, since it uses as much as digits as its factorization.

22540251653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777250086.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 22540251653 in words is "twenty-two billion, five hundred forty million, two hundred fifty-one thousand, six hundred fifty-three".