12500000026 has 8 divisors (see below), whose sum is σ = 19565217504. Its totient is φ = 5978260860.

The previous prime is 12499999999. The next prime is 12500000027. The reversal of 12500000026 is 62000000521.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12499999955 and 12500000009.

It is not an unprimeable number, because it can be changed into a prime (12500000027) 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, 135869520 + ... + 135869611.

It is an arithmetic number, because the mean of its divisors is an integer number (2445652188).

Almost surely, 2^12500000026 is an apocalyptic number.

12500000026 is a deficient number, since it is larger than the sum of its proper divisors (7065217478).

12500000026 is a wasteful number, since it uses less digits than its factorization.

12500000026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271739156.

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 12500000026 its reverse (62000000521), we get a palindrome (74500000547).

The spelling of 12500000026 in words is "twelve billion, five hundred million, twenty-six", and thus it is an aban number.