225724016431 has 4 divisors (see below), whose sum is σ = 225724999752. Its totient is φ = 225723033112.

The previous prime is 225724016381. The next prime is 225724016443. The reversal of 225724016431 is 134610427522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225724016431 - 2¹⁵ = 225723983663 is a prime.

It is a super-2 number, since 2×225724016431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225724016131) 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, 56061 + ... + 674233.

It is an arithmetic number, because the mean of its divisors is an integer number (56431249938).

Almost surely, 2^225724016431 is an apocalyptic number.

225724016431 is a deficient number, since it is larger than the sum of its proper divisors (983321).

225724016431 is an equidigital number, since it uses as much as digits as its factorization.

225724016431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983320.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 225724016431 in words is "two hundred twenty-five billion, seven hundred twenty-four million, sixteen thousand, four hundred thirty-one".