24997222165 has 8 divisors (see below), whose sum is σ = 30015181368. Its totient is φ = 19985434560.

The previous prime is 24997222141. The next prime is 24997222169. The reversal of 24997222165 is 56122279942.

It can be written as a sum of positive squares in 4 ways, for example, as 1764756081 + 23232466084 = 42009^2 + 152422^2 .

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

It is not a de Polignac number, because 24997222165 - 2⁷ = 24997222037 is a prime.

It is a super-3 number, since 3×24997222165³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24997222169) 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, 1533982 + ... + 1550191.

It is an arithmetic number, because the mean of its divisors is an integer number (3751897671).

Almost surely, 2^24997222165 is an apocalyptic number.

It is an amenable number.

24997222165 is a deficient number, since it is larger than the sum of its proper divisors (5017959203).

24997222165 is a wasteful number, since it uses less digits than its factorization.

24997222165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085799.

The product of its digits is 1088640, while the sum is 49.

The spelling of 24997222165 in words is "twenty-four billion, nine hundred ninety-seven million, two hundred twenty-two thousand, one hundred sixty-five".