43402425 has 24 divisors (see below), whose sum is σ = 78283680. Its totient is φ = 21043200.

The previous prime is 43402421. The next prime is 43402433. The reversal of 43402425 is 52420434.

It is not a de Polignac number, because 43402425 - 2² = 43402421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43402395 and 43402404.

It is not an unprimeable number, because it can be changed into a prime (43402421) 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, 25480 + ... + 27129.

It is an arithmetic number, because the mean of its divisors is an integer number (3261820).

Almost surely, 2^43402425 is an apocalyptic number.

It is an amenable number.

43402425 is a deficient number, since it is larger than the sum of its proper divisors (34881255).

43402425 is a wasteful number, since it uses less digits than its factorization.

43402425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52633 (or 52628 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 43402425 is about 6588.0516846789. The cubic root of 43402425 is about 351.4293250647.

Adding to 43402425 its reverse (52420434), we get a palindrome (95822859).

Subtracting 43402425 from its reverse (52420434), we obtain a square (9018009 = 3003²).

The spelling of 43402425 in words is "forty-three million, four hundred two thousand, four hundred twenty-five".