12501613 has 4 divisors (see below), whose sum is σ = 13237020. Its totient is φ = 11766208.

The previous prime is 12501607. The next prime is 12501617. The reversal of 12501613 is 31610521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5963364 + 6538249 = 2442^2 + 2557^2 .

It is a cyclic number.

It is not a de Polignac number, because 12501613 - 2¹³ = 12493421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12501617) 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, 367678 + ... + 367711.

It is an arithmetic number, because the mean of its divisors is an integer number (3309255).

Almost surely, 2^12501613 is an apocalyptic number.

It is an amenable number.

12501613 is a deficient number, since it is larger than the sum of its proper divisors (735407).

12501613 is an equidigital number, since it uses as much as digits as its factorization.

12501613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735406.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12501613 is about 3535.7620112219. The cubic root of 12501613 is about 232.0894237617.

The spelling of 12501613 in words is "twelve million, five hundred one thousand, six hundred thirteen".