12501323251 has 8 divisors (see below), whose sum is σ = 12626398400. Its totient is φ = 12376437120.

The previous prime is 12501323213. The next prime is 12501323257. The reversal of 12501323251 is 15232310521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12501323251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12501323257) 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, 87595 + ... + 180763.

It is an arithmetic number, because the mean of its divisors is an integer number (1578299800).

Almost surely, 2^12501323251 is an apocalyptic number.

12501323251 is a deficient number, since it is larger than the sum of its proper divisors (125075149).

12501323251 is a wasteful number, since it uses less digits than its factorization.

12501323251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94509.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 12501323251 its reverse (15232310521), we get a palindrome (27733633772).

The spelling of 12501323251 in words is "twelve billion, five hundred one million, three hundred twenty-three thousand, two hundred fifty-one".