425372639 has 2 divisors, whose sum is σ = 425372640. Its totient is φ = 425372638.

The previous prime is 425372621. The next prime is 425372653. The reversal of 425372639 is 936273524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425372639 - 2²⁴ = 408595423 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 425372596 and 425372605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425372699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212686319 + 212686320.

It is an arithmetic number, because the mean of its divisors is an integer number (212686320).

Almost surely, 2^425372639 is an apocalyptic number.

425372639 is a deficient number, since it is larger than the sum of its proper divisors (1).

425372639 is an equidigital number, since it uses as much as digits as its factorization.

425372639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 41.

The square root of 425372639 is about 20624.5639711486. The cubic root of 425372639 is about 752.0669732254.

The spelling of 425372639 in words is "four hundred twenty-five million, three hundred seventy-two thousand, six hundred thirty-nine".