225161699 has 4 divisors (see below), whose sum is σ = 257327664. Its totient is φ = 192995736.

The previous prime is 225161683. The next prime is 225161701. The reversal of 225161699 is 996161522.

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 225161699 - 2⁴ = 225161683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225161669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16082972 + ... + 16082985.

It is an arithmetic number, because the mean of its divisors is an integer number (64331916).

Almost surely, 2^225161699 is an apocalyptic number.

225161699 is a deficient number, since it is larger than the sum of its proper divisors (32165965).

225161699 is an equidigital number, since it uses as much as digits as its factorization.

225161699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32165964.

The product of its digits is 58320, while the sum is 41.

The square root of 225161699 is about 15005.3889986231. The cubic root of 225161699 is about 608.3658662946.

The spelling of 225161699 in words is "two hundred twenty-five million, one hundred sixty-one thousand, six hundred ninety-nine".