125399772 has 96 divisors (see below), whose sum is σ = 357235200. Its totient is φ = 37863936.

The previous prime is 125399767. The next prime is 125399779. The reversal of 125399772 is 277993521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125399779) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 45868 + ... + 48524.

It is an arithmetic number, because the mean of its divisors is an integer number (3721200).

Almost surely, 2^125399772 is an apocalyptic number.

125399772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125399772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178617600).

125399772 is an abundant number, since it is smaller than the sum of its proper divisors (231835428).

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

125399772 is a wasteful number, since it uses less digits than its factorization.

125399772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712 (or 2704 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 125399772 is about 11198.2039631362. The cubic root of 125399772 is about 500.5324621003.

It can be divided in two parts, 1253 and 99772, that added together give a triangular number (101025 = T₄₄₉).

The spelling of 125399772 in words is "one hundred twenty-five million, three hundred ninety-nine thousand, seven hundred seventy-two".