425404139 has 2 divisors, whose sum is σ = 425404140. Its totient is φ = 425404138.

The previous prime is 425404099. The next prime is 425404157. The reversal of 425404139 is 931404524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425404139 - 2²⁰ = 424355563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (425404169) 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 as a sum of consecutive naturals, namely, 212702069 + 212702070.

It is an arithmetic number, because the mean of its divisors is an integer number (212702070).

Almost surely, 2^425404139 is an apocalyptic number.

425404139 is a deficient number, since it is larger than the sum of its proper divisors (1).

425404139 is an equidigital number, since it uses as much as digits as its factorization.

425404139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 425404139 is about 20625.3276095193. The cubic root of 425404139 is about 752.0855369683.

The spelling of 425404139 in words is "four hundred twenty-five million, four hundred four thousand, one hundred thirty-nine".