225131102 has 16 divisors (see below), whose sum is σ = 408641760. Its totient is φ = 90809088.

The previous prime is 225131077. The next prime is 225131111. The reversal of 225131102 is 201131522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472727 + ... + 473202.

It is an arithmetic number, because the mean of its divisors is an integer number (25540110).

Almost surely, 2^225131102 is an apocalyptic number.

225131102 is a deficient number, since it is larger than the sum of its proper divisors (183510658).

225131102 is a wasteful number, since it uses less digits than its factorization.

225131102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945955.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 225131102 is about 15004.3694302693. The cubic root of 225131102 is about 608.3383083015.

Adding to 225131102 its reverse (201131522), we get a palindrome (426262624).

The spelling of 225131102 in words is "two hundred twenty-five million, one hundred thirty-one thousand, one hundred two".