425388629 has 2 divisors, whose sum is σ = 425388630. Its totient is φ = 425388628.

The previous prime is 425388589. The next prime is 425388631. The reversal of 425388629 is 926883524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404090404 + 21298225 = 20102^2 + 4615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425388629 is a prime.

Together with 425388631, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425388679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212694314 + 212694315.

It is an arithmetic number, because the mean of its divisors is an integer number (212694315).

Almost surely, 2^425388629 is an apocalyptic number.

It is an amenable number.

425388629 is a deficient number, since it is larger than the sum of its proper divisors (1).

425388629 is an equidigital number, since it uses as much as digits as its factorization.

425388629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 47.

The square root of 425388629 is about 20624.9516120645. The cubic root of 425388629 is about 752.0763966494.

The spelling of 425388629 in words is "four hundred twenty-five million, three hundred eighty-eight thousand, six hundred twenty-nine".