43421331425 has 24 divisors (see below), whose sum is σ = 56593627776. Its totient is φ = 32984167040.

The previous prime is 43421331413. The next prime is 43421331433. The reversal of 43421331425 is 52413312434.

It is not a de Polignac number, because 43421331425 - 2⁴ = 43421331409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43421331391 and 43421331400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196829 + ... + 354378.

It is an arithmetic number, because the mean of its divisors is an integer number (2358067824).

Almost surely, 2^43421331425 is an apocalyptic number.

It is an amenable number.

43421331425 is a deficient number, since it is larger than the sum of its proper divisors (13172296351).

43421331425 is a wasteful number, since it uses less digits than its factorization.

43421331425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551377 (or 551372 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

Adding to 43421331425 its reverse (52413312434), we get a palindrome (95834643859).

The spelling of 43421331425 in words is "forty-three billion, four hundred twenty-one million, three hundred thirty-one thousand, four hundred twenty-five".