1646422105425 has 48 divisors (see below), whose sum is σ = 2750343585792. Its totient is φ = 869012539200.

The previous prime is 1646422105411. The next prime is 1646422105429. The reversal of 1646422105425 is 5245012246461.

It is not a de Polignac number, because 1646422105425 - 2⁴ = 1646422105409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1646422105429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3377472 + ... + 3834078.

It is an arithmetic number, because the mean of its divisors is an integer number (57298824704).

Almost surely, 2^{1646422105425} is an apocalyptic number.

1646422105425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1646422105425 is a deficient number, since it is larger than the sum of its proper divisors (1103921480367).

1646422105425 is a wasteful number, since it uses less digits than its factorization.

1646422105425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457118 (or 457113 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 1646422105425 in words is "one trillion, six hundred forty-six billion, four hundred twenty-two million, one hundred five thousand, four hundred twenty-five".