225742415 has 4 divisors (see below), whose sum is σ = 270890904. Its totient is φ = 180593928.

The previous prime is 225742399. The next prime is 225742453. The reversal of 225742415 is 514247522.

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 225742415 - 2⁴ = 225742399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22574237 + ... + 22574246.

It is an arithmetic number, because the mean of its divisors is an integer number (67722726).

Almost surely, 2^225742415 is an apocalyptic number.

225742415 is a deficient number, since it is larger than the sum of its proper divisors (45148489).

225742415 is an equidigital number, since it uses as much as digits as its factorization.

225742415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45148488.

The product of its digits is 22400, while the sum is 32.

The square root of 225742415 is about 15024.7267862015. The cubic root of 225742415 is about 608.8884307540. Note that the first 3 decimals are identical.

Adding to 225742415 its reverse (514247522), we get a palindrome (739989937).

The spelling of 225742415 in words is "two hundred twenty-five million, seven hundred forty-two thousand, four hundred fifteen".