225992390 has 32 divisors (see below), whose sum is σ = 463851360. Its totient is φ = 78534144.

The previous prime is 225992383. The next prime is 225992399. The reversal of 225992390 is 93299522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225992399) 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, 48920 + ... + 53339.

It is an arithmetic number, because the mean of its divisors is an integer number (14495355).

Almost surely, 2^225992390 is an apocalyptic number.

225992390 is an abundant number, since it is smaller than the sum of its proper divisors (237858970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225992390 is a wasteful number, since it uses less digits than its factorization.

225992390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102296.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 225992390 is about 15033.0432714072. The cubic root of 225992390 is about 609.1130979381.

It can be divided in two parts, 2259 and 92390, that added together give a palindrome (94649).

The spelling of 225992390 in words is "two hundred twenty-five million, nine hundred ninety-two thousand, three hundred ninety".