425379681 has 10 divisors (see below), whose sum is σ = 635443842. Its totient is φ = 283586400.

The previous prime is 425379679. The next prime is 425379707. The reversal of 425379681 is 186973524.

It can be written as a sum of positive squares in only one way, i.e., 409698081 + 15681600 = 20241^2 + 3960^2 .

It is not a de Polignac number, because 425379681 - 2¹ = 425379679 is a prime.

It is a super-2 number, since 2×425379681² = 361895746015323522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (425379601) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2625720 + ... + 2625881.

Almost surely, 2^425379681 is an apocalyptic number.

It is an amenable number.

425379681 is a deficient number, since it is larger than the sum of its proper divisors (210064161).

425379681 is an equidigital number, since it uses as much as digits as its factorization.

425379681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5251613 (or 5251604 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 425379681 is about 20624.7346892027. The cubic root of 425379681 is about 752.0711233328.

The spelling of 425379681 in words is "four hundred twenty-five million, three hundred seventy-nine thousand, six hundred eighty-one".