431626025429 has 2 divisors, whose sum is σ = 431626025430. Its totient is φ = 431626025428.

The previous prime is 431626025423. The next prime is 431626025471. The reversal of 431626025429 is 924520626134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375787390225 + 55838635204 = 613015^2 + 236302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431626025429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 431626025429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431626025423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215813012714 + 215813012715.

It is an arithmetic number, because the mean of its divisors is an integer number (215813012715).

Almost surely, 2^431626025429 is an apocalyptic number.

It is an amenable number.

431626025429 is a deficient number, since it is larger than the sum of its proper divisors (1).

431626025429 is an equidigital number, since it uses as much as digits as its factorization.

431626025429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 431626025429 in words is "four hundred thirty-one billion, six hundred twenty-six million, twenty-five thousand, four hundred twenty-nine".