225747651 has 4 divisors (see below), whose sum is σ = 300996872. Its totient is φ = 150498432.

The previous prime is 225747647. The next prime is 225747653. The reversal of 225747651 is 156747522.

225747651 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 not a de Polignac number, because 225747651 - 2² = 225747647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225747653) 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, 37624606 + ... + 37624611.

It is an arithmetic number, because the mean of its divisors is an integer number (75249218).

Almost surely, 2^225747651 is an apocalyptic number.

225747651 is a deficient number, since it is larger than the sum of its proper divisors (75249221).

225747651 is an equidigital number, since it uses as much as digits as its factorization.

225747651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75249220.

The product of its digits is 117600, while the sum is 39.

The square root of 225747651 is about 15024.9010312880. The cubic root of 225747651 is about 608.8931383543.

The spelling of 225747651 in words is "two hundred twenty-five million, seven hundred forty-seven thousand, six hundred fifty-one".