13125945 has 32 divisors (see below), whose sum is σ = 24595200. Its totient is φ = 5852160.

The previous prime is 13125923. The next prime is 13125947. The reversal of 13125945 is 54952131.

It is not a de Polignac number, because 13125945 - 2⁷ = 13125817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13125947) 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, 2781 + ... + 5829.

It is an arithmetic number, because the mean of its divisors is an integer number (768600).

Almost surely, 2^13125945 is an apocalyptic number.

13125945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13125945 is a deficient number, since it is larger than the sum of its proper divisors (11469255).

13125945 is a wasteful number, since it uses less digits than its factorization.

13125945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105.

The product of its digits is 5400, while the sum is 30.

The square root of 13125945 is about 3622.9746065906. The cubic root of 13125945 is about 235.8903601127.

The spelling of 13125945 in words is "thirteen million, one hundred twenty-five thousand, nine hundred forty-five".