125111020 has 24 divisors (see below), whose sum is σ = 263358144. Its totient is φ = 49925376.

The previous prime is 125110969. The next prime is 125111047. The reversal of 125111020 is 20111521.

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, 1437 + ... + 15883.

It is an arithmetic number, because the mean of its divisors is an integer number (10973256).

Almost surely, 2^125111020 is an apocalyptic number.

125111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125111020 is an abundant number, since it is smaller than the sum of its proper divisors (138247124).

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

125111020 is a wasteful number, since it uses less digits than its factorization.

125111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14889 (or 14887 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 125111020 is about 11185.3037509046. The cubic root of 125111020 is about 500.1479828645.

Adding to 125111020 its reverse (20111521), we get a palindrome (145222541).

It can be divided in two parts, 12511 and 1020, that added together give a palindrome (13531).

The spelling of 125111020 in words is "one hundred twenty-five million, one hundred eleven thousand, twenty".