252423520409 has 8 divisors (see below), whose sum is σ = 267282076320. Its totient is φ = 237566088256.

The previous prime is 252423520381. The next prime is 252423520411. The reversal of 252423520409 is 904025324252.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252423520409 is a prime.

It is a super-3 number, since 3×252423520409³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252423520499) 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, 205622 + ... + 739680.

It is an arithmetic number, because the mean of its divisors is an integer number (33410259540).

Almost surely, 2^252423520409 is an apocalyptic number.

It is an amenable number.

252423520409 is a deficient number, since it is larger than the sum of its proper divisors (14858555911).

252423520409 is a wasteful number, since it uses less digits than its factorization.

252423520409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561879.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 252423520409 in words is "two hundred fifty-two billion, four hundred twenty-three million, five hundred twenty thousand, four hundred nine".