425547 has 8 divisors (see below), whose sum is σ = 630480. Its totient is φ = 283680.

The previous prime is 425533. The next prime is 425549. The reversal of 425547 is 745524.

It is not a de Polignac number, because 425547 - 2⁷ = 425419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 15761 = 425547 / (4 + 2 + 5 + 5 + 4 + 7).

It is a d-powerful number, because it can be written as 4⁴ + 2¹⁴ + 5⁶ + 5⁸ + 4⁴ + 7⁴ .

It is a self number, because there is not a number n which added to its sum of digits gives 425547.

It is not an unprimeable number, because it can be changed into a prime (425549) 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, 7854 + ... + 7907.

It is an arithmetic number, because the mean of its divisors is an integer number (78810).

2⁴²⁵⁵⁴⁷ is an apocalyptic number.

425547 is a deficient number, since it is larger than the sum of its proper divisors (204933).

425547 is a wasteful number, since it uses less digits than its factorization.

425547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15770 (or 15764 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 425547 is about 652.3396354661. The cubic root of 425547 is about 75.2169717051.

The spelling of 425547 in words is "four hundred twenty-five thousand, five hundred forty-seven".