1500725666 has 16 divisors (see below), whose sum is σ = 2562504768. Its totient is φ = 652489200.

The previous prime is 1500725579. The next prime is 1500725701. The reversal of 1500725666 is 6665270051.

It is a super-2 number, since 2×1500725666² = 4504355049182287112, which contains 22 as substring.

It is a Curzon number.

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, 1482425 + ... + 1483436.

It is an arithmetic number, because the mean of its divisors is an integer number (160156548).

Almost surely, 2^1500725666 is an apocalyptic number.

1500725666 is a deficient number, since it is larger than the sum of its proper divisors (1061779102).

1500725666 is a wasteful number, since it uses less digits than its factorization.

1500725666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965897.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 1500725666 is about 38739.2006370808. The cubic root of 1500725666 is about 1144.8988083948.

The spelling of 1500725666 in words is "one billion, five hundred million, seven hundred twenty-five thousand, six hundred sixty-six".