22275628157 has 4 divisors (see below), whose sum is σ = 22296624156. Its totient is φ = 22254632160.

The previous prime is 22275628127. The next prime is 22275628171. The reversal of 22275628157 is 75182657222.

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 6236418841 + 16039209316 = 78971^2 + 126646^2 .

It is a cyclic number.

It is not a de Polignac number, because 22275628157 - 2⁶ = 22275628093 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 (22275628127) 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, 10496408 + ... + 10498529.

It is an arithmetic number, because the mean of its divisors is an integer number (5574156039).

Almost surely, 2^22275628157 is an apocalyptic number.

It is an amenable number.

22275628157 is a deficient number, since it is larger than the sum of its proper divisors (20995999).

22275628157 is a wasteful number, since it uses less digits than its factorization.

22275628157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20995998.

The product of its digits is 940800, while the sum is 47.

The spelling of 22275628157 in words is "twenty-two billion, two hundred seventy-five million, six hundred twenty-eight thousand, one hundred fifty-seven".