11251040251 has 8 divisors (see below), whose sum is σ = 12276558000. Its totient is φ = 10225971840.

The previous prime is 11251040243. The next prime is 11251040291. The reversal of 11251040251 is 15204015211.

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

It is a cyclic number.

It is not a de Polignac number, because 11251040251 - 2³ = 11251040243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11251040291) 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, 58866 + ... + 161143.

It is an arithmetic number, because the mean of its divisors is an integer number (1534569750).

Almost surely, 2^11251040251 is an apocalyptic number.

11251040251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11251040251 is a deficient number, since it is larger than the sum of its proper divisors (1025517749).

11251040251 is a wasteful number, since it uses less digits than its factorization.

11251040251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224669.

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 11251040251 its reverse (15204015211), we get a palindrome (26455055462).

The spelling of 11251040251 in words is "eleven billion, two hundred fifty-one million, forty thousand, two hundred fifty-one".