43725520 has 20 divisors (see below), whose sum is σ = 101662020. Its totient is φ = 17490176.

The previous prime is 43725511. The next prime is 43725559. The reversal of 43725520 is 2552734.

It can be written as a sum of positive squares in 2 ways, for example, as 24681024 + 19044496 = 4968^2 + 4364^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273205 + ... + 273364.

It is an arithmetic number, because the mean of its divisors is an integer number (5083101).

Almost surely, 2^43725520 is an apocalyptic number.

43725520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43725520 is an abundant number, since it is smaller than the sum of its proper divisors (57936500).

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

43725520 is a wasteful number, since it uses less digits than its factorization.

43725520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546582 (or 546576 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 43725520 is about 6612.5275046687. The cubic root of 43725520 is about 352.2992032470.

The spelling of 43725520 in words is "forty-three million, seven hundred twenty-five thousand, five hundred twenty".