43129025 has 24 divisors (see below), whose sum is σ = 56407104. Its totient is φ = 32648000.

The previous prime is 43128973. The next prime is 43129027. The reversal of 43129025 is 52092134.

It is not a de Polignac number, because 43129025 - 2⁶ = 43128961 is a prime.

It is a super-2 number, since 2×43129025² = 3720225594901250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43128985 and 43129003.

It is not an unprimeable number, because it can be changed into a prime (43129027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61175 + ... + 61875.

It is an arithmetic number, because the mean of its divisors is an integer number (2350296).

Almost surely, 2^43129025 is an apocalyptic number.

It is an amenable number.

43129025 is a deficient number, since it is larger than the sum of its proper divisors (13278079).

43129025 is a wasteful number, since it uses less digits than its factorization.

43129025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 43129025 is about 6567.2692193940. The cubic root of 43129025 is about 350.6898638475.

The spelling of 43129025 in words is "forty-three million, one hundred twenty-nine thousand, twenty-five".