125731580 has 48 divisors (see below), whose sum is σ = 290424960. Its totient is φ = 45431808.

The previous prime is 125731579. The next prime is 125731589. The reversal of 125731580 is 85137521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125731589) 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 15 ways as a sum of consecutive naturals, for example, 7076 + ... + 17364.

It is an arithmetic number, because the mean of its divisors is an integer number (6050520).

Almost surely, 2^125731580 is an apocalyptic number.

125731580 is a gapful number since it is divisible by the number (10) 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 125731580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145212480).

125731580 is an abundant number, since it is smaller than the sum of its proper divisors (164693380).

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

125731580 is a wasteful number, since it uses less digits than its factorization.

125731580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10358 (or 10356 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 125731580 is about 11213.0094087181. The cubic root of 125731580 is about 500.9735431970.

The spelling of 125731580 in words is "one hundred twenty-five million, seven hundred thirty-one thousand, five hundred eighty".