12405285272450 has 96 divisors (see below), whose sum is σ = 26472819631104. Its totient is φ = 4236689413440.

The previous prime is 12405285272437. The next prime is 12405285272473. The reversal of 12405285272450 is 5427258250421.

It is a super-2 number, since 2×12405285272450² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12405285272395 and 12405285272404.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172636229 + ... + 172708071.

It is an arithmetic number, because the mean of its divisors is an integer number (275758537824).

Almost surely, 2^{12405285272450} is an apocalyptic number.

12405285272450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12405285272450 is an abundant number, since it is smaller than the sum of its proper divisors (14067534358654).

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

12405285272450 is a wasteful number, since it uses less digits than its factorization.

12405285272450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73776 (or 73771 counting only the distinct ones).

The product of its (nonzero) digits is 1792000, while the sum is 47.

The spelling of 12405285272450 in words is "twelve trillion, four hundred five billion, two hundred eighty-five million, two hundred seventy-two thousand, four hundred fifty".