125386491 has 12 divisors (see below), whose sum is σ = 176445672. Its totient is φ = 79190784.

The previous prime is 125386489. The next prime is 125386507. The reversal of 125386491 is 194683521.

It is not a de Polignac number, because 125386491 - 2¹ = 125386489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125386411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56806 + ... + 58971.

It is an arithmetic number, because the mean of its divisors is an integer number (14703806).

Almost surely, 2^125386491 is an apocalyptic number.

125386491 is a deficient number, since it is larger than the sum of its proper divisors (51059181).

125386491 is a wasteful number, since it uses less digits than its factorization.

125386491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115818 (or 115799 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 125386491 is about 11197.6109505555. The cubic root of 125386491 is about 500.5147911316.

The spelling of 125386491 in words is "one hundred twenty-five million, three hundred eighty-six thousand, four hundred ninety-one".