225027691 has 16 divisors (see below), whose sum is σ = 275595264. Its totient is φ = 179339904.

The previous prime is 225027679. The next prime is 225027703. The reversal of 225027691 is 196720522.

It is an interprime number because it is at equal distance from previous prime (225027679) and next prime (225027703).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225027691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225027601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1515 + ... + 21268.

It is an arithmetic number, because the mean of its divisors is an integer number (17224704).

Almost surely, 2^225027691 is an apocalyptic number.

225027691 is a deficient number, since it is larger than the sum of its proper divisors (50567573).

225027691 is a wasteful number, since it uses less digits than its factorization.

225027691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22890.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 225027691 is about 15000.9230049354. The cubic root of 225027691 is about 608.2451499791.

The spelling of 225027691 in words is "two hundred twenty-five million, twenty-seven thousand, six hundred ninety-one".