43013725 has 6 divisors (see below), whose sum is σ = 53337050. Its totient is φ = 34410960.

The previous prime is 43013713. The next prime is 43013731. The reversal of 43013725 is 52731034.

It can be written as a sum of positive squares in 3 ways, for example, as 1295044 + 41718681 = 1138^2 + 6459^2 .

It is not a de Polignac number, because 43013725 - 2⁵ = 43013693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1720549 = 43013725 / (4 + 3 + 0 + 1 + 3 + 7 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 43013725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 860250 + ... + 860299.

Almost surely, 2^43013725 is an apocalyptic number.

It is an amenable number.

43013725 is a deficient number, since it is larger than the sum of its proper divisors (10323325).

43013725 is a wasteful number, since it uses less digits than its factorization.

43013725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720559 (or 1720554 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 43013725 is about 6558.4849622455. The cubic root of 43013725 is about 350.3770765994.

Adding to 43013725 its reverse (52731034), we get a palindrome (95744759).

The spelling of 43013725 in words is "forty-three million, thirteen thousand, seven hundred twenty-five".