258125513 has 2 divisors, whose sum is σ = 258125514. Its totient is φ = 258125512.

The previous prime is 258125509. The next prime is 258125521. The reversal of 258125513 is 315521852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173264569 + 84860944 = 13163^2 + 9212^2 .

It is a cyclic number.

It is not a de Polignac number, because 258125513 - 2² = 258125509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 258125513.

It is not a weakly prime, because it can be changed into another prime (258125503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129062756 + 129062757.

It is an arithmetic number, because the mean of its divisors is an integer number (129062757).

Almost surely, 2^258125513 is an apocalyptic number.

It is an amenable number.

258125513 is a deficient number, since it is larger than the sum of its proper divisors (1).

258125513 is an equidigital number, since it uses as much as digits as its factorization.

258125513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 32.

The square root of 258125513 is about 16066.2849781771. The cubic root of 258125513 is about 636.7128928849.

The spelling of 258125513 in words is "two hundred fifty-eight million, one hundred twenty-five thousand, five hundred thirteen".