43161425 has 24 divisors (see below), whose sum is σ = 56897400. Its totient is φ = 32417280.

The previous prime is 43161401. The next prime is 43161431. The reversal of 43161425 is 52416134.

It can be written as a sum of positive squares in 12 ways, for example, as 22801 + 43138624 = 151^2 + 6568^2 .

It is not a de Polignac number, because 43161425 - 2¹⁴ = 43145041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43161394 and 43161403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26021 + ... + 27629.

It is an arithmetic number, because the mean of its divisors is an integer number (2370725).

Almost surely, 2^43161425 is an apocalyptic number.

It is an amenable number.

43161425 is a deficient number, since it is larger than the sum of its proper divisors (13735975).

43161425 is a wasteful number, since it uses less digits than its factorization.

43161425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685 (or 1680 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 43161425 is about 6569.7355350120. The cubic root of 43161425 is about 350.7776586099. Note that the first 3 decimals are identical.

Adding to 43161425 its reverse (52416134), we get a palindrome (95577559).

The spelling of 43161425 in words is "forty-three million, one hundred sixty-one thousand, four hundred twenty-five".