425666345 has 16 divisors (see below), whose sum is σ = 552513360. Its totient is φ = 312954624.

The previous prime is 425666323. The next prime is 425666369. The reversal of 425666345 is 543666524.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 50353216 + 375313129 = 7096^2 + 19373^2 .

It is a cyclic number.

It is not a de Polignac number, because 425666345 - 2¹⁸ = 425404201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587 + ... + 29183.

It is an arithmetic number, because the mean of its divisors is an integer number (34532085).

Almost surely, 2^425666345 is an apocalyptic number.

It is an amenable number.

425666345 is a deficient number, since it is larger than the sum of its proper divisors (126847015).

425666345 is a wasteful number, since it uses less digits than its factorization.

425666345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28844.

The product of its digits is 518400, while the sum is 41.

The square root of 425666345 is about 20631.6830384726. The cubic root of 425666345 is about 752.2400260136.

The spelling of 425666345 in words is "four hundred twenty-five million, six hundred sixty-six thousand, three hundred forty-five".