43140625 has 28 divisors (see below), whose sum is σ = 59061744. Its totient is φ = 31250000.

The previous prime is 43140607. The next prime is 43140637. The reversal of 43140625 is 52604134.

It is not a de Polignac number, because 43140625 - 2¹³ = 43132433 is a prime.

It is a super-2 number, since 2×43140625² = 3722227050781250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43140625.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 171750 + ... + 172000.

It is an arithmetic number, because the mean of its divisors is an integer number (2109348).

Almost surely, 2^43140625 is an apocalyptic number.

It is an amenable number.

43140625 is a deficient number, since it is larger than the sum of its proper divisors (15921119).

43140625 is an frugal number, since it uses more digits than its factorization.

43140625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 43140625 is about 6568.1523277098. The cubic root of 43140625 is about 350.7213015917.

Adding to 43140625 its reverse (52604134), we get a palindrome (95744759).

The spelling of 43140625 in words is "forty-three million, one hundred forty thousand, six hundred twenty-five".