6256513 has 4 divisors (see below), whose sum is σ = 6458368. Its totient is φ = 6054660.

The previous prime is 6256511. The next prime is 6256531. The reversal of 6256513 is 3156526.

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.

It is a cyclic number.

It is not a de Polignac number, because 6256513 - 2¹ = 6256511 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6256511) 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, 100881 + ... + 100942.

It is an arithmetic number, because the mean of its divisors is an integer number (1614592).

Almost surely, 2^6256513 is an apocalyptic number.

It is an amenable number.

6256513 is a deficient number, since it is larger than the sum of its proper divisors (201855).

6256513 is a wasteful number, since it uses less digits than its factorization.

6256513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201854.

The product of its digits is 5400, while the sum is 28.

The square root of 6256513 is about 2501.3022608233. The cubic root of 6256513 is about 184.2655369784.

It can be divided in two parts, 625651 and 3, that multiplied together give a triangular number (1876953 = T₁₉₃₇).

The spelling of 6256513 in words is "six million, two hundred fifty-six thousand, five hundred thirteen".