425771647 has 8 divisors (see below), whose sum is σ = 515219616. Its totient is φ = 343479552.

The previous prime is 425771641. The next prime is 425771659. The reversal of 425771647 is 746177524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425771647 - 2¹⁹ = 425247359 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 (425771641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1788838 + ... + 1789075.

It is an arithmetic number, because the mean of its divisors is an integer number (64402452).

Almost surely, 2^425771647 is an apocalyptic number.

425771647 is a deficient number, since it is larger than the sum of its proper divisors (89447969).

425771647 is a wasteful number, since it uses less digits than its factorization.

425771647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577937.

The product of its digits is 329280, while the sum is 43.

The square root of 425771647 is about 20634.2348295254. The cubic root of 425771647 is about 752.3020510004.

The spelling of 425771647 in words is "four hundred twenty-five million, seven hundred seventy-one thousand, six hundred forty-seven".