125155513 has 16 divisors (see below), whose sum is σ = 153377280. Its totient is φ = 99680256.

The previous prime is 125155487. The next prime is 125155517. The reversal of 125155513 is 315551521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125155513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125155517) 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, 2745 + ... + 16057.

It is an arithmetic number, because the mean of its divisors is an integer number (9586080).

Almost surely, 2^125155513 is an apocalyptic number.

It is an amenable number.

125155513 is a deficient number, since it is larger than the sum of its proper divisors (28221767).

125155513 is a wasteful number, since it uses less digits than its factorization.

125155513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13416.

The product of its digits is 3750, while the sum is 28.

The square root of 125155513 is about 11187.2924785222. The cubic root of 125155513 is about 500.2072647375.

The spelling of 125155513 in words is "one hundred twenty-five million, one hundred fifty-five thousand, five hundred thirteen".