12625134640 has 40 divisors (see below), whose sum is σ = 29394971280. Its totient is φ = 5042908416.

The previous prime is 12625134623. The next prime is 12625134653. The reversal of 12625134640 is 4643152621.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×12625134640³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12625134596 and 12625134605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54574 + ... + 168013.

It is an arithmetic number, because the mean of its divisors is an integer number (734874282).

Almost surely, 2^12625134640 is an apocalyptic number.

12625134640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12625134640 is an abundant number, since it is smaller than the sum of its proper divisors (16769836640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12625134640 is a wasteful number, since it uses less digits than its factorization.

12625134640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223309 (or 223303 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 12625134640 in words is "twelve billion, six hundred twenty-five million, one hundred thirty-four thousand, six hundred forty".