225769390 has 32 divisors (see below), whose sum is σ = 506663424. Its totient is φ = 70369440.

The previous prime is 225769361. The next prime is 225769391. The reversal of 225769390 is 93967522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225769391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145834 + ... + 147373.

It is an arithmetic number, because the mean of its divisors is an integer number (15833232).

Almost surely, 2^225769390 is an apocalyptic number.

225769390 is an abundant number, since it is smaller than the sum of its proper divisors (280894034).

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

225769390 is a wasteful number, since it uses less digits than its factorization.

225769390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293232.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 225769390 is about 15025.6244462585. The cubic root of 225769390 is about 608.9126827483.

The spelling of 225769390 in words is "two hundred twenty-five million, seven hundred sixty-nine thousand, three hundred ninety".