12510222551 has 4 divisors (see below), whose sum is σ = 12848336712. Its totient is φ = 12172108392.

The previous prime is 12510222547. The next prime is 12510222563. The reversal of 12510222551 is 15522201521.

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 12510222551 - 2² = 12510222547 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 12510222551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12510222521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169057025 + ... + 169057098.

It is an arithmetic number, because the mean of its divisors is an integer number (3212084178).

Almost surely, 2^12510222551 is an apocalyptic number.

12510222551 is a deficient number, since it is larger than the sum of its proper divisors (338114161).

12510222551 is an equidigital number, since it uses as much as digits as its factorization.

12510222551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338114160.

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

The spelling of 12510222551 in words is "twelve billion, five hundred ten million, two hundred twenty-two thousand, five hundred fifty-one".