423187725 has 24 divisors (see below), whose sum is σ = 715947232. Its totient is φ = 220449600.

The previous prime is 423187697. The next prime is 423187733. The reversal of 423187725 is 527781324.

It is not a de Polignac number, because 423187725 - 2¹⁴ = 423171341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62386 + ... + 68835.

Almost surely, 2^423187725 is an apocalyptic number.

It is an amenable number.

423187725 is a deficient number, since it is larger than the sum of its proper divisors (292759507).

423187725 is a wasteful number, since it uses less digits than its factorization.

423187725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131277 (or 131272 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 423187725 is about 20571.5270458953. The cubic root of 423187725 is about 750.7771056421. Note that the first 3 decimals are identical.

The spelling of 423187725 in words is "four hundred twenty-three million, one hundred eighty-seven thousand, seven hundred twenty-five".