125331780 has 48 divisors (see below), whose sum is σ = 401063040. Its totient is φ = 28647168.

The previous prime is 125331763. The next prime is 125331851. The reversal of 125331780 is 87133521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148785 + ... + 149624.

It is an arithmetic number, because the mean of its divisors is an integer number (8355480).

Almost surely, 2^125331780 is an apocalyptic number.

125331780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125331780 is an abundant number, since it is smaller than the sum of its proper divisors (275731260).

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

125331780 is a wasteful number, since it uses less digits than its factorization.

125331780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298428 (or 298426 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 125331780 is about 11195.1677075424. The cubic root of 125331780 is about 500.4419825211.

It can be divided in two parts, 1253 and 31780, that added together give a palindrome (33033).

The spelling of 125331780 in words is "one hundred twenty-five million, three hundred thirty-one thousand, seven hundred eighty".