425508447 has 32 divisors (see below), whose sum is σ = 700682752. Its totient is φ = 223668864.

The previous prime is 425508443. The next prime is 425508493. The reversal of 425508447 is 744805524.

It is not a de Polignac number, because 425508447 - 2² = 425508443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425508443) 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 31 ways as a sum of consecutive naturals, for example, 81273 + ... + 86349.

It is an arithmetic number, because the mean of its divisors is an integer number (21896336).

Almost surely, 2^425508447 is an apocalyptic number.

425508447 is a deficient number, since it is larger than the sum of its proper divisors (275174305).

425508447 is a wasteful number, since it uses less digits than its factorization.

425508447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5407.

The product of its (nonzero) digits is 179200, while the sum is 39.

The square root of 425508447 is about 20627.8560931571. The cubic root of 425508447 is about 752.1470017576.

The spelling of 425508447 in words is "four hundred twenty-five million, five hundred eight thousand, four hundred forty-seven".