225727304731 has 4 divisors (see below), whose sum is σ = 226027874464. Its totient is φ = 225426735000.

The previous prime is 225727304689. The next prime is 225727304741. The reversal of 225727304731 is 137403727522.

It is a happy number.

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 225727304731 - 2⁷ = 225727304603 is a prime.

It is a super-2 number, since 2×225727304731² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225727304741) 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, 150283740 + ... + 150285241.

It is an arithmetic number, because the mean of its divisors is an integer number (56506968616).

Almost surely, 2^225727304731 is an apocalyptic number.

225727304731 is a deficient number, since it is larger than the sum of its proper divisors (300569733).

225727304731 is an equidigital number, since it uses as much as digits as its factorization.

225727304731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300569732.

The product of its (nonzero) digits is 493920, while the sum is 43.

The spelling of 225727304731 in words is "two hundred twenty-five billion, seven hundred twenty-seven million, three hundred four thousand, seven hundred thirty-one".