125532220 has 24 divisors (see below), whose sum is σ = 287583408. Its totient is φ = 45648000.

The previous prime is 125532217. The next prime is 125532263. The reversal of 125532220 is 22235521.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 125532191 and 125532200.

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, 285081 + ... + 285520.

It is an arithmetic number, because the mean of its divisors is an integer number (11982642).

Almost surely, 2^125532220 is an apocalyptic number.

125532220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125532220 is an abundant number, since it is smaller than the sum of its proper divisors (162051188).

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

125532220 is a wasteful number, since it uses less digits than its factorization.

125532220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570621 (or 570619 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 125532220 is about 11204.1162078943. The cubic root of 125532220 is about 500.7086219022.

Adding to 125532220 its reverse (22235521), we get a palindrome (147767741).

The spelling of 125532220 in words is "one hundred twenty-five million, five hundred thirty-two thousand, two hundred twenty".