225745737 has 32 divisors (see below), whose sum is σ = 365432832. Its totient is φ = 121008384.

The previous prime is 225745733. The next prime is 225745789. The reversal of 225745737 is 737547522.

It is a happy number.

It is not a de Polignac number, because 225745737 - 2² = 225745733 is a prime.

It is a super-2 number, since 2×225745737² = 101922275547346338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225745733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130158 + ... + 131880.

It is an arithmetic number, because the mean of its divisors is an integer number (11419776).

Almost surely, 2^225745737 is an apocalyptic number.

It is an amenable number.

225745737 is a deficient number, since it is larger than the sum of its proper divisors (139687095).

225745737 is a wasteful number, since it uses less digits than its factorization.

225745737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117.

The product of its digits is 411600, while the sum is 42.

The square root of 225745737 is about 15024.8373368899. The cubic root of 225745737 is about 608.8914175173.

The spelling of 225745737 in words is "two hundred twenty-five million, seven hundred forty-five thousand, seven hundred thirty-seven".