125655220 has 12 divisors (see below), whose sum is σ = 263876004. Its totient is φ = 50262080.

The previous prime is 125655203. The next prime is 125655239. The reversal of 125655220 is 22556521.

It can be written as a sum of positive squares in 2 ways, for example, as 92891044 + 32764176 = 9638^2 + 5724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3141361 + ... + 3141400.

It is an arithmetic number, because the mean of its divisors is an integer number (21989667).

Almost surely, 2^125655220 is an apocalyptic number.

125655220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125655220 is an abundant number, since it is smaller than the sum of its proper divisors (138220784).

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

125655220 is a wasteful number, since it uses less digits than its factorization.

125655220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282770 (or 6282768 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 125655220 is about 11209.6039180695. The cubic root of 125655220 is about 500.8721046492.

It can be divided in two parts, 125 and 655220, that multiplied together give a square (81902500 = 9050²).

The spelling of 125655220 in words is "one hundred twenty-five million, six hundred fifty-five thousand, two hundred twenty".