423525809 has 16 divisors (see below), whose sum is σ = 494726400. Its totient is φ = 355043520.

The previous prime is 423525799. The next prime is 423525829. The reversal of 423525809 is 908525324.

It is a cyclic number.

It is not a de Polignac number, because 423525809 - 2⁴ = 423525793 is a prime.

It is a super-2 number, since 2×423525809² = 358748221778208962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423525829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127844 + ... + 131114.

It is an arithmetic number, because the mean of its divisors is an integer number (30920400).

Almost surely, 2^423525809 is an apocalyptic number.

It is an amenable number.

423525809 is a deficient number, since it is larger than the sum of its proper divisors (71200591).

423525809 is a wasteful number, since it uses less digits than its factorization.

423525809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 423525809 is about 20579.7426854662. The cubic root of 423525809 is about 750.9769839690.

The spelling of 423525809 in words is "four hundred twenty-three million, five hundred twenty-five thousand, eight hundred nine".