225738751 has 4 divisors (see below), whose sum is σ = 257987152. Its totient is φ = 193490352.

The previous prime is 225738731. The next prime is 225738757. The reversal of 225738751 is 157837522.

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 225738751 - 2⁵ = 225738719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225738757) 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, 16124190 + ... + 16124203.

It is an arithmetic number, because the mean of its divisors is an integer number (64496788).

Almost surely, 2^225738751 is an apocalyptic number.

225738751 is a deficient number, since it is larger than the sum of its proper divisors (32248401).

225738751 is an equidigital number, since it uses as much as digits as its factorization.

225738751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32248400.

The product of its digits is 117600, while the sum is 40.

The square root of 225738751 is about 15024.6048533730. The cubic root of 225738751 is about 608.8851364694.

The spelling of 225738751 in words is "two hundred twenty-five million, seven hundred thirty-eight thousand, seven hundred fifty-one".