100225442 has 4 divisors (see below), whose sum is σ = 150338166. Its totient is φ = 50112720.

The previous prime is 100225441. The next prime is 100225459. The reversal of 100225442 is 244522001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 82828201 + 17397241 = 9101^2 + 4171^2 .

It is not an unprimeable number, because it can be changed into a prime (100225441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25056359 + ... + 25056362.

Almost surely, 2^100225442 is an apocalyptic number.

100225442 is a deficient number, since it is larger than the sum of its proper divisors (50112724).

100225442 is an equidigital number, since it uses as much as digits as its factorization.

100225442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50112723.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 100225442 is about 10011.2657541392. The cubic root of 100225442 is about 464.5074245962.

Adding to 100225442 its reverse (244522001), we get a palindrome (344747443).

The spelling of 100225442 in words is "one hundred million, two hundred twenty-five thousand, four hundred forty-two".