425999905 has 16 divisors (see below), whose sum is σ = 542179584. Its totient is φ = 320633280.

The previous prime is 425999891. The next prime is 425999909. The reversal of 425999905 is 509999524.

It is not a de Polignac number, because 425999905 - 2²³ = 417611297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425999909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23349 + ... + 37378.

It is an arithmetic number, because the mean of its divisors is an integer number (33886224).

Almost surely, 2^425999905 is an apocalyptic number.

It is an amenable number.

425999905 is a deficient number, since it is larger than the sum of its proper divisors (116179679).

425999905 is a wasteful number, since it uses less digits than its factorization.

425999905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60816.

The product of its (nonzero) digits is 1312200, while the sum is 52.

The square root of 425999905 is about 20639.7651391676. The cubic root of 425999905 is about 752.4364644318.

The spelling of 425999905 in words is "four hundred twenty-five million, nine hundred ninety-nine thousand, nine hundred five".