125003513 has 4 divisors (see below), whose sum is σ = 125212800. Its totient is φ = 124794228.

The previous prime is 125003509. The next prime is 125003539. The reversal of 125003513 is 315300521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315300521 = 61 ⋅5168861.

It is a cyclic number.

It is not a de Polignac number, because 125003513 - 2² = 125003509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125009513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103745 + ... + 104942.

It is an arithmetic number, because the mean of its divisors is an integer number (31303200).

Almost surely, 2^125003513 is an apocalyptic number.

It is an amenable number.

125003513 is a deficient number, since it is larger than the sum of its proper divisors (209287).

125003513 is an equidigital number, since it uses as much as digits as its factorization.

125003513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209286.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 125003513 is about 11180.4969925312. The cubic root of 125003513 is about 500.0046839561.

The spelling of 125003513 in words is "one hundred twenty-five million, three thousand, five hundred thirteen".