225731003761 has 4 divisors (see below), whose sum is σ = 230980562032. Its totient is φ = 220481445492.

The previous prime is 225731003747. The next prime is 225731003777. The reversal of 225731003761 is 167300137522.

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 a cyclic number.

It is not a de Polignac number, because 225731003761 - 2³³ = 217141069169 is a prime.

It is a super-2 number, since 2×225731003761² (a number of 24 digits) 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 225731003761.

It is not an unprimeable number, because it can be changed into a prime (225731003791) 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, 2624779071 + ... + 2624779156.

It is an arithmetic number, because the mean of its divisors is an integer number (57745140508).

Almost surely, 2^225731003761 is an apocalyptic number.

It is an amenable number.

225731003761 is a deficient number, since it is larger than the sum of its proper divisors (5249558271).

225731003761 is an equidigital number, since it uses as much as digits as its factorization.

225731003761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249558270.

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 225731003761 in words is "two hundred twenty-five billion, seven hundred thirty-one million, three thousand, seven hundred sixty-one".