425999904 has 96 divisors (see below), whose sum is σ = 1231433280. Its totient is φ = 127872000.

The previous prime is 425999891. The next prime is 425999909. The reversal of 425999904 is 409999524.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113254 + ... + 116954.

It is an arithmetic number, because the mean of its divisors is an integer number (12827430).

Almost surely, 2^425999904 is an apocalyptic number.

425999904 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425999904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615716640).

425999904 is an abundant number, since it is smaller than the sum of its proper divisors (805433376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425999904 is a wasteful number, since it uses less digits than its factorization.

425999904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834 (or 3826 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 425999904 is about 20639.7651149426. The cubic root of 425999904 is about 752.4364638431.

The spelling of 425999904 in words is "four hundred twenty-five million, nine hundred ninety-nine thousand, nine hundred four".