425399999 has 8 divisors (see below), whose sum is σ = 431342688. Its totient is φ = 419489280.

The previous prime is 425399977. The next prime is 425400013. The reversal of 425399999 is 999993524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425399999 - 2¹² = 425395903 is a prime.

It is a Duffinian number.

425399999 is a modest number, since divided by 99999 gives 4253 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425399399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19454 + ... + 35060.

It is an arithmetic number, because the mean of its divisors is an integer number (53917836).

Almost surely, 2^425399999 is an apocalyptic number.

425399999 is a deficient number, since it is larger than the sum of its proper divisors (5942689).

425399999 is a wasteful number, since it uses less digits than its factorization.

425399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15985.

The product of its digits is 7085880, while the sum is 59.

The square root of 425399999 is about 20625.2272472329. The cubic root of 425399999 is about 752.0830972144.

The spelling of 425399999 in words is "four hundred twenty-five million, three hundred ninety-nine thousand, nine hundred ninety-nine".