225439617 has 32 divisors (see below), whose sum is σ = 342200320. Its totient is φ = 130870080.

The previous prime is 225439561. The next prime is 225439619. The reversal of 225439617 is 716934522.

It is not a de Polignac number, because 225439617 - 2⁶ = 225439553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225439619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226992 + ... + 227982.

It is an arithmetic number, because the mean of its divisors is an integer number (10693760).

Almost surely, 2^225439617 is an apocalyptic number.

It is an amenable number.

225439617 is a deficient number, since it is larger than the sum of its proper divisors (116760703).

225439617 is a wasteful number, since it uses less digits than its factorization.

225439617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

The product of its digits is 90720, while the sum is 39.

The square root of 225439617 is about 15014.6467490914. The cubic root of 225439617 is about 608.6160662022.

The spelling of 225439617 in words is "two hundred twenty-five million, four hundred thirty-nine thousand, six hundred seventeen".