225371881 has 8 divisors (see below), whose sum is σ = 261790784. Its totient is φ = 190008720.

The previous prime is 225371869. The next prime is 225371893. The reversal of 225371881 is 188173522.

It is an interprime number because it is at equal distance from previous prime (225371869) and next prime (225371893).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225371881 is a prime.

It is a super-2 number, since 2×225371881² = 101584969490956322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225371881.

It is not an unprimeable number, because it can be changed into a prime (225377881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263475 + ... + 264328.

It is an arithmetic number, because the mean of its divisors is an integer number (32723848).

Almost surely, 2^225371881 is an apocalyptic number.

It is an amenable number.

225371881 is a deficient number, since it is larger than the sum of its proper divisors (36418903).

225371881 is an equidigital number, since it uses as much as digits as its factorization.

225371881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527871.

The product of its digits is 26880, while the sum is 37.

The square root of 225371881 is about 15012.3909155071. The cubic root of 225371881 is about 608.5551047971. Note that the first 3 decimals are identical.

The spelling of 225371881 in words is "two hundred twenty-five million, three hundred seventy-one thousand, eight hundred eighty-one".