225213455 has 8 divisors (see below), whose sum is σ = 270362400. Its totient is φ = 180099936.

The previous prime is 225213397. The next prime is 225213463. The reversal of 225213455 is 554312522.

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

It is a cyclic number.

It is not a de Polignac number, because 225213455 - 2¹² = 225209359 is a prime.

It is a super-2 number, since 2×225213455² = 101442200626074050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8081 + ... + 22709.

It is an arithmetic number, because the mean of its divisors is an integer number (33795300).

Almost surely, 2^225213455 is an apocalyptic number.

225213455 is a deficient number, since it is larger than the sum of its proper divisors (45148945).

225213455 is a wasteful number, since it uses less digits than its factorization.

225213455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17713.

The product of its digits is 12000, while the sum is 29.

The square root of 225213455 is about 15007.1134799468. The cubic root of 225213455 is about 608.4124760151.

Adding to 225213455 its reverse (554312522), we get a palindrome (779525977).

The spelling of 225213455 in words is "two hundred twenty-five million, two hundred thirteen thousand, four hundred fifty-five".