125777220 has 48 divisors (see below), whose sum is σ = 372895488. Its totient is φ = 31567360.

The previous prime is 125777209. The next prime is 125777221. The reversal of 125777220 is 22777521.

It is not an unprimeable number, because it can be changed into a prime (125777221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60636 + ... + 62675.

It is an arithmetic number, because the mean of its divisors is an integer number (7768656).

Almost surely, 2^125777220 is an apocalyptic number.

125777220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125777220 is an abundant number, since it is smaller than the sum of its proper divisors (247118268).

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

125777220 is a wasteful number, since it uses less digits than its factorization.

125777220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123340 (or 123338 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 125777220 is about 11215.0443601441. The cubic root of 125777220 is about 501.0341529142.

The spelling of 125777220 in words is "one hundred twenty-five million, seven hundred seventy-seven thousand, two hundred twenty".