12505131011402 has 8 divisors (see below), whose sum is σ = 18757737249156. Its totient is φ = 6252551928352.

The previous prime is 12505131011371. The next prime is 12505131011411. The reversal of 12505131011402 is 20411013150521.

It can be written as a sum of positive squares in 2 ways, for example, as 9471615604801 + 3033515406601 = 3077599^2 + 1741699^2 .

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

It is a super-2 number, since 2×12505131011402² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5595443 + ... + 7504614.

Almost surely, 2^{12505131011402} is an apocalyptic number.

12505131011402 is a deficient number, since it is larger than the sum of its proper divisors (6252606237754).

12505131011402 is a wasteful number, since it uses less digits than its factorization.

12505131011402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13577352.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 12505131011402 its reverse (20411013150521), we get a palindrome (32916144161923).

The spelling of 12505131011402 in words is "twelve trillion, five hundred five billion, one hundred thirty-one million, eleven thousand, four hundred two".