225670997 has 2 divisors, whose sum is σ = 225670998. Its totient is φ = 225670996.

The previous prime is 225670967. The next prime is 225671021. The reversal of 225670997 is 799076522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222427396 + 3243601 = 14914^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 225670997 - 2⁸ = 225670741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225670927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112835498 + 112835499.

It is an arithmetic number, because the mean of its divisors is an integer number (112835499).

Almost surely, 2^225670997 is an apocalyptic number.

It is an amenable number.

225670997 is a deficient number, since it is larger than the sum of its proper divisors (1).

225670997 is an equidigital number, since it uses as much as digits as its factorization.

225670997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 225670997 is about 15022.3499160418. The cubic root of 225670997 is about 608.8242127520.

The spelling of 225670997 in words is "two hundred twenty-five million, six hundred seventy thousand, nine hundred ninety-seven".