425501729 has 2 divisors, whose sum is σ = 425501730. Its totient is φ = 425501728.

The previous prime is 425501719. The next prime is 425501749. The reversal of 425501729 is 927105524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425308129 + 193600 = 20623^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 425501729 - 2²⁰ = 424453153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (425501719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212750864 + 212750865.

It is an arithmetic number, because the mean of its divisors is an integer number (212750865).

Almost surely, 2^425501729 is an apocalyptic number.

It is an amenable number.

425501729 is a deficient number, since it is larger than the sum of its proper divisors (1).

425501729 is an equidigital number, since it uses as much as digits as its factorization.

425501729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 425501729 is about 20627.6932544577. The cubic root of 425501729 is about 752.1430433950.

The spelling of 425501729 in words is "four hundred twenty-five million, five hundred one thousand, seven hundred twenty-nine".