252566465 has 8 divisors (see below), whose sum is σ = 308798568. Its totient is φ = 198240640.

The previous prime is 252566459. The next prime is 252566471. The reversal of 252566465 is 564665252.

It is an interprime number because it is at equal distance from previous prime (252566459) and next prime (252566471).

It can be written as a sum of positive squares in 4 ways, for example, as 71098624 + 181467841 = 8432^2 + 13471^2 .

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

It is not a de Polignac number, because 252566465 - 2¹⁶ = 252500929 is a prime.

It is a super-3 number, since 3×252566465³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476276 + ... + 476805.

It is an arithmetic number, because the mean of its divisors is an integer number (38599821).

Almost surely, 2^252566465 is an apocalyptic number.

It is an amenable number.

252566465 is a deficient number, since it is larger than the sum of its proper divisors (56232103).

252566465 is an equidigital number, since it uses as much as digits as its factorization.

252566465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953139.

The product of its digits is 432000, while the sum is 41.

The square root of 252566465 is about 15892.3398214360. The cubic root of 252566465 is about 632.1088855615.

The spelling of 252566465 in words is "two hundred fifty-two million, five hundred sixty-six thousand, four hundred sixty-five".