225244877961 has 4 divisors (see below), whose sum is σ = 300326503952. Its totient is φ = 150163251972.

The previous prime is 225244877947. The next prime is 225244877987. The reversal of 225244877961 is 169778442522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 225244877961 - 2⁹ = 225244877449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225244877941) 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, 37540812991 + ... + 37540812996.

It is an arithmetic number, because the mean of its divisors is an integer number (75081625988).

Almost surely, 2^225244877961 is an apocalyptic number.

It is an amenable number.

225244877961 is a deficient number, since it is larger than the sum of its proper divisors (75081625991).

225244877961 is an equidigital number, since it uses as much as digits as its factorization.

225244877961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75081625990.

The product of its digits is 13547520, while the sum is 57.

The spelling of 225244877961 in words is "two hundred twenty-five billion, two hundred forty-four million, eight hundred seventy-seven thousand, nine hundred sixty-one".