12500000007 has 32 divisors (see below), whose sum is σ = 18933557760. Its totient is φ = 7266000000.

The previous prime is 12499999999. The next prime is 12500000027. The reversal of 12500000007 is 70000000521.

It is a happy number.

It is not a de Polignac number, because 12500000007 - 2³ = 12499999999 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 101257 + ... + 187757.

It is an arithmetic number, because the mean of its divisors is an integer number (591673680).

Almost surely, 2^12500000007 is an apocalyptic number.

12500000007 is a deficient number, since it is larger than the sum of its proper divisors (6433557753).

12500000007 is a wasteful number, since it uses less digits than its factorization.

12500000007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86695.

The product of its (nonzero) digits is 70, while the sum is 15.

Adding to 12500000007 its reverse (70000000521), we get a palindrome (82500000528).

The spelling of 12500000007 in words is "twelve billion, five hundred million, seven", and thus it is an aban number.