125045013 has 32 divisors (see below), whose sum is σ = 185846400. Its totient is φ = 74418176.

The previous prime is 125044991. The next prime is 125045021. The reversal of 125045013 is 310540521.

It is a de Polignac number, because none of the positive numbers 2^k-125045013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125045083) 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, 86545 + ... + 87977.

It is an arithmetic number, because the mean of its divisors is an integer number (5807700).

Almost surely, 2^125045013 is an apocalyptic number.

It is an amenable number.

125045013 is a deficient number, since it is larger than the sum of its proper divisors (60801387).

125045013 is a wasteful number, since it uses less digits than its factorization.

125045013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 125045013 is about 11182.3527488628. The cubic root of 125045013 is about 500.0600101306.

Adding to 125045013 its reverse (310540521), we get a palindrome (435585534).

The spelling of 125045013 in words is "one hundred twenty-five million, forty-five thousand, thirteen".