83725013 has 4 divisors (see below), whose sum is σ = 83745420. Its totient is φ = 83704608.

The previous prime is 83725003. The next prime is 83725067. The reversal of 83725013 is 31052738.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31052738 = 2 ⋅15526369.

It can be written as a sum of positive squares in 2 ways, for example, as 55920484 + 27804529 = 7478^2 + 5273^2 .

It is a cyclic number.

It is not a de Polignac number, because 83725013 - 2⁴ = 83724997 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 (83725003) 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, 1670 + ... + 13047.

It is an arithmetic number, because the mean of its divisors is an integer number (20936355).

Almost surely, 2^83725013 is an apocalyptic number.

It is an amenable number.

83725013 is a deficient number, since it is larger than the sum of its proper divisors (20407).

83725013 is a wasteful number, since it uses less digits than its factorization.

83725013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20406.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 83725013 is about 9150.1373213739. The cubic root of 83725013 is about 437.4734904209.

The spelling of 83725013 in words is "eighty-three million, seven hundred twenty-five thousand, thirteen".