425843647 has 4 divisors (see below), whose sum is σ = 427107616. Its totient is φ = 424579680.

The previous prime is 425843617. The next prime is 425843653. The reversal of 425843647 is 746348524.

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

It is a cyclic number.

It is not a de Polignac number, because 425843647 - 2⁷ = 425843519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425843617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631479 + ... + 632152.

It is an arithmetic number, because the mean of its divisors is an integer number (106776904).

Almost surely, 2^425843647 is an apocalyptic number.

425843647 is a deficient number, since it is larger than the sum of its proper divisors (1263969).

425843647 is a wasteful number, since it uses less digits than its factorization.

425843647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263968.

The product of its digits is 645120, while the sum is 43.

The square root of 425843647 is about 20635.9794291427. The cubic root of 425843647 is about 752.3444545557.

The spelling of 425843647 in words is "four hundred twenty-five million, eight hundred forty-three thousand, six hundred forty-seven".