1625134770666 has 48 divisors (see below), whose sum is σ = 3842212634208. Its totient is φ = 492338800800.

The previous prime is 1625134770659. The next prime is 1625134770673. The reversal of 1625134770666 is 6660774315261.

It is an interprime number because it is at equal distance from previous prime (1625134770659) and next prime (1625134770673).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276805 + ... + 1823976.

It is an arithmetic number, because the mean of its divisors is an integer number (80046096546).

Almost surely, 2^{1625134770666} is an apocalyptic number.

1625134770666 is an abundant number, since it is smaller than the sum of its proper divisors (2217077863542).

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

1625134770666 is a wasteful number, since it uses less digits than its factorization.

1625134770666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104707 (or 2104704 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 1625134770666 in words is "one trillion, six hundred twenty-five billion, one hundred thirty-four million, seven hundred seventy thousand, six hundred sixty-six".