225191694291 has 4 divisors (see below), whose sum is σ = 300255592392. Its totient is φ = 150127796192.

The previous prime is 225191694281. The next prime is 225191694319. The reversal of 225191694291 is 192496191522.

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 225191694291 - 2³⁰ = 224117952467 is a prime.

It is a super-2 number, since 2×225191694291² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225191694251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37531949046 + ... + 37531949051.

It is an arithmetic number, because the mean of its divisors is an integer number (75063898098).

Almost surely, 2^225191694291 is an apocalyptic number.

225191694291 is a deficient number, since it is larger than the sum of its proper divisors (75063898101).

225191694291 is an equidigital number, since it uses as much as digits as its factorization.

225191694291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75063898100.

The product of its digits is 699840, while the sum is 51.

The spelling of 225191694291 in words is "two hundred twenty-five billion, one hundred ninety-one million, six hundred ninety-four thousand, two hundred ninety-one".