1625313750666 has 16 divisors (see below), whose sum is σ = 3250977405984. Its totient is φ = 541712932784.

The previous prime is 1625313750617. The next prime is 1625313750667. The reversal of 1625313750666 is 6660573135261.

It is not an unprimeable number, because it can be changed into a prime (1625313750667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14518956 + ... + 14630471.

It is an arithmetic number, because the mean of its divisors is an integer number (203186087874).

Almost surely, 2^{1625313750666} is an apocalyptic number.

1625313750666 is an abundant number, since it is smaller than the sum of its proper divisors (1625663655318).

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

1625313750666 is a wasteful number, since it uses less digits than its factorization.

1625313750666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29158725.

The product of its (nonzero) digits is 4082400, while the sum is 51.

The spelling of 1625313750666 in words is "one trillion, six hundred twenty-five billion, three hundred thirteen million, seven hundred fifty thousand, six hundred sixty-six".