1666725074 has 16 divisors (see below), whose sum is σ = 2858701248. Its totient is φ = 713946192.

The previous prime is 1666725059. The next prime is 1666725113. The reversal of 1666725074 is 4705276661.

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, 989 + ... + 57744.

It is an arithmetic number, because the mean of its divisors is an integer number (178668828).

Almost surely, 2^1666725074 is an apocalyptic number.

1666725074 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1666725074 is a deficient number, since it is larger than the sum of its proper divisors (1191976174).

1666725074 is a wasteful number, since it uses less digits than its factorization.

1666725074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60769.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 1666725074 is about 40825.5443809388. The cubic root of 1666725074 is about 1185.6449512451.

The spelling of 1666725074 in words is "one billion, six hundred sixty-six million, seven hundred twenty-five thousand, seventy-four".