12251270172551 has 4 divisors (see below), whose sum is σ = 12251467877112. Its totient is φ = 12251072467992.

The previous prime is 12251270172527. The next prime is 12251270172569. The reversal of 12251270172551 is 15527107215221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12251270172551 - 2⁴² = 7853223661447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12251270172499 and 12251270172508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12251270172511) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 98759300 + ... + 98883273.

It is an arithmetic number, because the mean of its divisors is an integer number (3062866969278).

Almost surely, 2^{12251270172551} is an apocalyptic number.

12251270172551 is a deficient number, since it is larger than the sum of its proper divisors (197704561).

12251270172551 is an equidigital number, since it uses as much as digits as its factorization.

12251270172551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197704560.

The product of its (nonzero) digits is 98000, while the sum is 41.

Adding to 12251270172551 its reverse (15527107215221), we get a palindrome (27778377387772).

The spelling of 12251270172551 in words is "twelve trillion, two hundred fifty-one billion, two hundred seventy million, one hundred seventy-two thousand, five hundred fifty-one".