225749417 has 2 divisors, whose sum is σ = 225749418. Its totient is φ = 225749416.

The previous prime is 225749411. The next prime is 225749437. The reversal of 225749417 is 714947522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200958976 + 24790441 = 14176^2 + 4979^2 .

It is a cyclic number.

It is not a de Polignac number, because 225749417 - 2⁴ = 225749401 is a prime.

It is not a weakly prime, because it can be changed into another prime (225749411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112874708 + 112874709.

It is an arithmetic number, because the mean of its divisors is an integer number (112874709).

Almost surely, 2^225749417 is an apocalyptic number.

It is an amenable number.

225749417 is a deficient number, since it is larger than the sum of its proper divisors (1).

225749417 is an equidigital number, since it uses as much as digits as its factorization.

225749417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 225749417 is about 15024.9598002790. The cubic root of 225749417 is about 608.8947261190.

Subtracting from 225749417 its sum of digits (41), we obtain a triangular number (225749376 = T₂₁₂₄₈).

The spelling of 225749417 in words is "two hundred twenty-five million, seven hundred forty-nine thousand, four hundred seventeen".