425999999 has 2 divisors, whose sum is σ = 426000000. Its totient is φ = 425999998.

The previous prime is 425999983. The next prime is 426000017. The reversal of 425999999 is 999999524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425999999 - 2⁴ = 425999983 is a prime.

425999999 is a modest number, since divided by 99999 gives 4259 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425999909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212999999 + 213000000.

It is an arithmetic number, because the mean of its divisors is an integer number (213000000).

Almost surely, 2^425999999 is an apocalyptic number.

425999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

425999999 is an equidigital number, since it uses as much as digits as its factorization.

425999999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21257640, while the sum is 65.

The square root of 425999999 is about 20639.7674163252. The cubic root of 425999999 is about 752.4365197753.

The spelling of 425999999 in words is "four hundred twenty-five million, nine hundred ninety-nine thousand, nine hundred ninety-nine".