225738731 has 2 divisors, whose sum is σ = 225738732. Its totient is φ = 225738730.

The previous prime is 225738727. The next prime is 225738757. The reversal of 225738731 is 137837522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225738731 - 2² = 225738727 is a prime.

It is a super-2 number, since 2×225738731² = 101915949346980722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225738701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112869365 + 112869366.

It is an arithmetic number, because the mean of its divisors is an integer number (112869366).

Almost surely, 2^225738731 is an apocalyptic number.

225738731 is a deficient number, since it is larger than the sum of its proper divisors (1).

225738731 is an equidigital number, since it uses as much as digits as its factorization.

225738731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 225738731 is about 15024.6041877981. The cubic root of 225738731 is about 608.8851184874.

The spelling of 225738731 in words is "two hundred twenty-five million, seven hundred thirty-eight thousand, seven hundred thirty-one".