431243420025 has 72 divisors (see below), whose sum is σ = 781011610272. Its totient is φ = 208229600000.

The previous prime is 431243420021. The next prime is 431243420029. The reversal of 431243420025 is 520024342134.

It is an interprime number because it is at equal distance from previous prime (431243420021) and next prime (431243420029).

It is not a de Polignac number, because 431243420025 - 2² = 431243420021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431243419974 and 431243420001.

It is not an unprimeable number, because it can be changed into a prime (431243420021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51971677 + ... + 51979973.

It is an arithmetic number, because the mean of its divisors is an integer number (10847383476).

Almost surely, 2^431243420025 is an apocalyptic number.

It is an amenable number.

431243420025 is a deficient number, since it is larger than the sum of its proper divisors (349768190247).

431243420025 is a wasteful number, since it uses less digits than its factorization.

431243420025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8823 (or 8567 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 431243420025 its reverse (520024342134), we get a palindrome (951267762159).

The spelling of 431243420025 in words is "four hundred thirty-one billion, two hundred forty-three million, four hundred twenty thousand, twenty-five".