225431393 has 16 divisors (see below), whose sum is σ = 249739200. Its totient is φ = 201780480.

The previous prime is 225431387. The next prime is 225431429. The reversal of 225431393 is 393134522.

It is not a de Polignac number, because 225431393 - 2⁴ = 225431377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225431093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400130 + ... + 400692.

It is an arithmetic number, because the mean of its divisors is an integer number (15608700).

Almost surely, 2^225431393 is an apocalyptic number.

It is an amenable number.

225431393 is a deficient number, since it is larger than the sum of its proper divisors (24307807).

225431393 is a wasteful number, since it uses less digits than its factorization.

225431393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its digits is 19440, while the sum is 32.

The square root of 225431393 is about 15014.3728806767. The cubic root of 225431393 is about 608.6086653743.

The spelling of 225431393 in words is "two hundred twenty-five million, four hundred thirty-one thousand, three hundred ninety-three".