5163256251 has 32 divisors (see below), whose sum is σ = 8329536000. Its totient is φ = 3148546464.

The previous prime is 5163256183. The next prime is 5163256291. The reversal of 5163256251 is 1526523615.

5163256251 is a `hidden beast` number, since 5 + 1 + 6 + 3 + 25 + 625 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-5163256251 is a prime.

It is a super-2 number, since 2×5163256251² = 53318430226981150002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5163256291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158655 + ... + 188408.

It is an arithmetic number, because the mean of its divisors is an integer number (260298000).

Almost surely, 2^5163256251 is an apocalyptic number.

5163256251 is a deficient number, since it is larger than the sum of its proper divisors (3166279749).

5163256251 is a wasteful number, since it uses less digits than its factorization.

5163256251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347120 (or 347114 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 5163256251 is about 71855.8017908088. The cubic root of 5163256251 is about 1728.3879367489.

Adding to 5163256251 its reverse (1526523615), we get a palindrome (6689779866).

The spelling of 5163256251 in words is "five billion, one hundred sixty-three million, two hundred fifty-six thousand, two hundred fifty-one".