425667659 has 4 divisors (see below), whose sum is σ = 448071240. Its totient is φ = 403264080.

The previous prime is 425667611. The next prime is 425667667. The reversal of 425667659 is 956766524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425667659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425667679) 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, 11201762 + ... + 11201799.

It is an arithmetic number, because the mean of its divisors is an integer number (112017810).

Almost surely, 2^425667659 is an apocalyptic number.

425667659 is a deficient number, since it is larger than the sum of its proper divisors (22403581).

425667659 is a wasteful number, since it uses less digits than its factorization.

425667659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22403580.

The product of its digits is 2721600, while the sum is 50.

The square root of 425667659 is about 20631.7148826752. The cubic root of 425667659 is about 752.2408000489.

The spelling of 425667659 in words is "four hundred twenty-five million, six hundred sixty-seven thousand, six hundred fifty-nine".