125391539 has 32 divisors (see below), whose sum is σ = 160406400. Its totient is φ = 97372800.

The previous prime is 125391527. The next prime is 125391547. The reversal of 125391539 is 935193521.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-125391539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125381539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271769 + ... + 272229.

It is an arithmetic number, because the mean of its divisors is an integer number (5012700).

Almost surely, 2^125391539 is an apocalyptic number.

125391539 is a deficient number, since it is larger than the sum of its proper divisors (35014861).

125391539 is an equidigital number, since it uses as much as digits as its factorization.

125391539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 542 counting only the distinct ones).

The product of its digits is 36450, while the sum is 38.

The square root of 125391539 is about 11197.8363535104. The cubic root of 125391539 is about 500.5215078700.

The spelling of 125391539 in words is "one hundred twenty-five million, three hundred ninety-one thousand, five hundred thirty-nine".