43857725 has 6 divisors (see below), whose sum is σ = 54383610. Its totient is φ = 35086160.

The previous prime is 43857679. The next prime is 43857733. The reversal of 43857725 is 52775834.

It can be written as a sum of positive squares in 3 ways, for example, as 7689529 + 36168196 = 2773^2 + 6014^2 .

It is not a de Polignac number, because 43857725 - 2⁶ = 43857661 is a prime.

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, 877130 + ... + 877179.

It is an arithmetic number, because the mean of its divisors is an integer number (9063935).

Almost surely, 2^43857725 is an apocalyptic number.

It is an amenable number.

43857725 is a deficient number, since it is larger than the sum of its proper divisors (10525885).

43857725 is a wasteful number, since it uses less digits than its factorization.

43857725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754319 (or 1754314 counting only the distinct ones).

The product of its digits is 235200, while the sum is 41.

The square root of 43857725 is about 6622.5165156457. The cubic root of 43857725 is about 352.6539072733.

It can be divided in two parts, 43857 and 725, that multiplied together give a triangular number (31796325 = T₇₉₇₄).

The spelling of 43857725 in words is "forty-three million, eight hundred fifty-seven thousand, seven hundred twenty-five".