43537725 has 108 divisors (see below), whose sum is σ = 99234720. Its totient is φ = 18043200.

The previous prime is 43537691. The next prime is 43537757. The reversal of 43537725 is 52773534.

43537725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43537725 - 2⁶ = 43537661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43537725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 121096 + ... + 121454.

It is an arithmetic number, because the mean of its divisors is an integer number (918840).

Almost surely, 2^43537725 is an apocalyptic number.

43537725 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43537725 is an abundant number, since it is smaller than the sum of its proper divisors (55696995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43537725 is a wasteful number, since it uses less digits than its factorization.

43537725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 385 counting only the distinct ones).

The product of its digits is 88200, while the sum is 36.

The square root of 43537725 is about 6598.3122842133. The cubic root of 43537725 is about 351.7941208486.

The spelling of 43537725 in words is "forty-three million, five hundred thirty-seven thousand, seven hundred twenty-five".