11510251251 has 12 divisors (see below), whose sum is σ = 16302871512. Its totient is φ = 7222117888.

The previous prime is 11510251229. The next prime is 11510251253. The reversal of 11510251251 is 15215201511.

It is not a de Polignac number, because 11510251251 - 2⁵ = 11510251219 is a prime.

It is a super-2 number, since 2×11510251251² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11510251253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6637110 + ... + 6638843.

It is an arithmetic number, because the mean of its divisors is an integer number (1358572626).

Almost surely, 2^11510251251 is an apocalyptic number.

11510251251 is a deficient number, since it is larger than the sum of its proper divisors (4792620261).

11510251251 is a wasteful number, since it uses less digits than its factorization.

11510251251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13275990 (or 13275973 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 24.

Adding to 11510251251 its reverse (15215201511), we get a palindrome (26725452762).

The spelling of 11510251251 in words is "eleven billion, five hundred ten million, two hundred fifty-one thousand, two hundred fifty-one".