125643522 has 16 divisors (see below), whose sum is σ = 253122912. Its totient is φ = 41575200.

The previous prime is 125643487. The next prime is 125643547. The reversal of 125643522 is 225346521.

It is a self number, because there is not a number n which added to its sum of digits gives 125643522.

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, 75604 + ... + 77247.

It is an arithmetic number, because the mean of its divisors is an integer number (15820182).

Almost surely, 2^125643522 is an apocalyptic number.

125643522 is an abundant number, since it is smaller than the sum of its proper divisors (127479390).

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

125643522 is a wasteful number, since it uses less digits than its factorization.

125643522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152993.

The product of its digits is 14400, while the sum is 30.

The square root of 125643522 is about 11209.0821212087. The cubic root of 125643522 is about 500.8565611016.

The spelling of 125643522 in words is "one hundred twenty-five million, six hundred forty-three thousand, five hundred twenty-two".