425021039 has 2 divisors, whose sum is σ = 425021040. Its totient is φ = 425021038.

The previous prime is 425021021. The next prime is 425021041. The reversal of 425021039 is 930120524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425021039 is a prime.

Together with 425021041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 425020999 and 425021017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425021339) 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, 212510519 + 212510520.

It is an arithmetic number, because the mean of its divisors is an integer number (212510520).

Almost surely, 2^425021039 is an apocalyptic number.

425021039 is a deficient number, since it is larger than the sum of its proper divisors (1).

425021039 is an equidigital number, since it uses as much as digits as its factorization.

425021039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 425021039 is about 20616.0383924749. The cubic root of 425021039 is about 751.8597042627.

The spelling of 425021039 in words is "four hundred twenty-five million, twenty-one thousand, thirty-nine".