5251250640165 has 8 divisors (see below), whose sum is σ = 8402001024288. Its totient is φ = 2800667008080.

The previous prime is 5251250640113. The next prime is 5251250640197. The reversal of 5251250640165 is 5610460521525.

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

It is not a de Polignac number, because 5251250640165 - 2⁶ = 5251250640101 is a prime.

It is a super-2 number, since 2×5251250640165² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175041687991 + ... + 175041688020.

It is an arithmetic number, because the mean of its divisors is an integer number (1050250128036).

Almost surely, 2^{5251250640165} is an apocalyptic number.

It is an amenable number.

5251250640165 is a deficient number, since it is larger than the sum of its proper divisors (3150750384123).

5251250640165 is a wasteful number, since it uses less digits than its factorization.

5251250640165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350083376019.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 5251250640165 in words is "five trillion, two hundred fifty-one billion, two hundred fifty million, six hundred forty thousand, one hundred sixty-five".