423565825 has 24 divisors (see below), whose sum is σ = 544495160. Its totient is φ = 326592000.

The previous prime is 423565823. The next prime is 423565859. The reversal of 423565825 is 528565324.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 89699841 + 333865984 = 9471^2 + 18272^2 .

It is not a de Polignac number, because 423565825 - 2¹ = 423565823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423565823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98725 + ... + 102925.

Almost surely, 2^423565825 is an apocalyptic number.

It is an amenable number.

423565825 is a deficient number, since it is larger than the sum of its proper divisors (120929335).

423565825 is a wasteful number, since it uses less digits than its factorization.

423565825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357 (or 4352 counting only the distinct ones).

The product of its digits is 288000, while the sum is 40.

The square root of 423565825 is about 20580.7148806838. The cubic root of 423565825 is about 751.0006347501. Note that the first 3 decimals are identical.

The spelling of 423565825 in words is "four hundred twenty-three million, five hundred sixty-five thousand, eight hundred twenty-five".