425308129 has 9 divisors (see below), whose sum is σ = 436802899. Its totient is φ = 414109840.

The previous prime is 425308109. The next prime is 425308139. The reversal of 425308129 is 921803524.

The square root of 425308129 is 20623.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20493729 + 404814400 = 4527^2 + 20120^2 .

It is not a de Polignac number, because 425308129 - 2⁵ = 425308097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425308094 and 425308103.

It is not an unprimeable number, because it can be changed into a prime (425308109) 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 8 ways as a sum of consecutive naturals, for example, 845292 + ... + 845794.

Almost surely, 2^425308129 is an apocalyptic number.

425308129 is the 20623-rd square number.

425308129 is the 10312-nd centered octagonal number.

It is an amenable number.

425308129 is a deficient number, since it is larger than the sum of its proper divisors (11494770).

425308129 is an frugal number, since it uses more digits than its factorization.

425308129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The cubic root of 425308129 is about 752.0289529982.

The spelling of 425308129 in words is "four hundred twenty-five million, three hundred eight thousand, one hundred twenty-nine".