125222520 has 32 divisors (see below), whose sum is σ = 375667920. Its totient is φ = 33392640.

The previous prime is 125222477. The next prime is 125222593. The reversal of 125222520 is 25222521.

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, 521641 + ... + 521880.

Almost surely, 2^125222520 is an apocalyptic number.

125222520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125222520 is an abundant number, since it is smaller than the sum of its proper divisors (250445400).

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

125222520 is a wasteful number, since it uses less digits than its factorization.

125222520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043535 (or 1043531 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 125222520 is about 11190.2868595939. The cubic root of 125222520 is about 500.2965174534.

Subtracting from 125222520 its reverse (25222521), we obtain a palindrome (99999999).

The spelling of 125222520 in words is "one hundred twenty-five million, two hundred twenty-two thousand, five hundred twenty".