12505451412 has 24 divisors (see below), whose sum is σ = 29181400416. Its totient is φ = 4168196128.

The previous prime is 12505451381. The next prime is 12505451437. The reversal of 12505451412 is 21415450521.

It is a self number, because there is not a number n which added to its sum of digits gives 12505451412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215503 + ... + 267305.

It is an arithmetic number, because the mean of its divisors is an integer number (1215891684).

Almost surely, 2^12505451412 is an apocalyptic number.

12505451412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12505451412 is an abundant number, since it is smaller than the sum of its proper divisors (16675949004).

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

12505451412 is a wasteful number, since it uses less digits than its factorization.

12505451412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71927 (or 71925 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 12505451412 in words is "twelve billion, five hundred five million, four hundred fifty-one thousand, four hundred twelve".