125421222 has 16 divisors (see below), whose sum is σ = 250956720. Its totient is φ = 41788032.

The previous prime is 125421211. The next prime is 125421251. The reversal of 125421222 is 222124521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17554 + ... + 23642.

It is an arithmetic number, because the mean of its divisors is an integer number (15684795).

Almost surely, 2^125421222 is an apocalyptic number.

125421222 is an abundant number, since it is smaller than the sum of its proper divisors (125535498).

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

125421222 is a wasteful number, since it uses less digits than its factorization.

125421222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9527.

The product of its digits is 640, while the sum is 21.

The square root of 125421222 is about 11199.1616650533. The cubic root of 125421222 is about 500.5609996567.

Adding to 125421222 its reverse (222124521), we get a palindrome (347545743).

The spelling of 125421222 in words is "one hundred twenty-five million, four hundred twenty-one thousand, two hundred twenty-two".