2225561131 has 4 divisors (see below), whose sum is σ = 2228354352. Its totient is φ = 2222767912.

The previous prime is 2225561119. The next prime is 2225561141. The reversal of 2225561131 is 1311655222.

2225561131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2225561131 - 2²³ = 2217172523 is a prime.

It is a super-2 number, since 2×2225561131² = 9906244695635998322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2225561131.

It is not an unprimeable number, because it can be changed into a prime (2225561111) 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, 1395415 + ... + 1397008.

It is an arithmetic number, because the mean of its divisors is an integer number (557088588).

Almost surely, 2^2225561131 is an apocalyptic number.

2225561131 is a deficient number, since it is larger than the sum of its proper divisors (2793221).

2225561131 is an equidigital number, since it uses as much as digits as its factorization.

2225561131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793220.

The product of its digits is 3600, while the sum is 28.

The square root of 2225561131 is about 47175.8532620238. The cubic root of 2225561131 is about 1305.6091226279.

The spelling of 2225561131 in words is "two billion, two hundred twenty-five million, five hundred sixty-one thousand, one hundred thirty-one".