425004665 has 4 divisors (see below), whose sum is σ = 510005604. Its totient is φ = 340003728.

The previous prime is 425004661. The next prime is 425004683. The reversal of 425004665 is 566400524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 276091456 + 148913209 = 16616^2 + 12203^2 .

It is a cyclic number.

It is not a de Polignac number, because 425004665 - 2² = 425004661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425004661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42500462 + ... + 42500471.

It is an arithmetic number, because the mean of its divisors is an integer number (127501401).

Almost surely, 2^425004665 is an apocalyptic number.

It is an amenable number.

425004665 is a deficient number, since it is larger than the sum of its proper divisors (85000939).

425004665 is an equidigital number, since it uses as much as digits as its factorization.

425004665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85000938.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 425004665 is about 20615.6412706469. The cubic root of 425004665 is about 751.8500489690.

The spelling of 425004665 in words is "four hundred twenty-five million, four thousand, six hundred sixty-five".