43131025 has 36 divisors (see below), whose sum is σ = 62912268. Its totient is φ = 29245440.

The previous prime is 43130987. The next prime is 43131031. The reversal of 43131025 is 52013134.

It can be written as a sum of positive squares in 6 ways, for example, as 2286144 + 40844881 = 1512^2 + 6391^2 .

It is not a de Polignac number, because 43131025 - 2⁷ = 43130897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43130993 and 43131011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 167697 + ... + 167953.

It is an arithmetic number, because the mean of its divisors is an integer number (1747563).

Almost surely, 2^43131025 is an apocalyptic number.

It is an amenable number.

43131025 is a deficient number, since it is larger than the sum of its proper divisors (19781243).

43131025 is a wasteful number, since it uses less digits than its factorization.

43131025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 43131025 is about 6567.4214879205. The cubic root of 43131025 is about 350.6952845503.

Adding to 43131025 its reverse (52013134), we get a palindrome (95144159).

The spelling of 43131025 in words is "forty-three million, one hundred thirty-one thousand, twenty-five".