11520225251 has 8 divisors (see below), whose sum is σ = 11536588560. Its totient is φ = 11503876608.

The previous prime is 11520225229. The next prime is 11520225259. The reversal of 11520225251 is 15252202511.

It is a happy number.

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 11520225251 - 2²⁶ = 11453116387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11520225251.

It is not an unprimeable number, because it can be changed into a prime (11520225259) 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, 2960315 + ... + 2964203.

It is an arithmetic number, because the mean of its divisors is an integer number (1442073570).

Almost surely, 2^11520225251 is an apocalyptic number.

11520225251 is a deficient number, since it is larger than the sum of its proper divisors (16363309).

11520225251 is a wasteful number, since it uses less digits than its factorization.

11520225251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 11520225251 its reverse (15252202511), we get a palindrome (26772427762).

The spelling of 11520225251 in words is "eleven billion, five hundred twenty million, two hundred twenty-five thousand, two hundred fifty-one".