515255125 has 128 divisors (see below), whose sum is σ = 879869952. Its totient is φ = 291456000.

The previous prime is 515255071. The next prime is 515255149. The reversal of 515255125 is 521552515.

It is not a de Polignac number, because 515255125 - 2⁷ = 515254997 is a prime.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 7690342 + ... + 7690408.

It is an arithmetic number, because the mean of its divisors is an integer number (6873984).

Almost surely, 2^515255125 is an apocalyptic number.

515255125 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

515255125 is a deficient number, since it is larger than the sum of its proper divisors (364614827).

515255125 is a wasteful number, since it uses less digits than its factorization.

515255125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 154 counting only the distinct ones).

The product of its digits is 12500, while the sum is 31.

The square root of 515255125 is about 22699.2318151959. The cubic root of 515255125 is about 801.6917973593.

The spelling of 515255125 in words is "five hundred fifteen million, two hundred fifty-five thousand, one hundred twenty-five".