1425572666 has 8 divisors (see below), whose sum is σ = 2443838880. Its totient is φ = 610959708.

The previous prime is 1425572653. The next prime is 1425572677. The reversal of 1425572666 is 6662755241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50913296 + ... + 50913323.

It is an arithmetic number, because the mean of its divisors is an integer number (305479860).

Almost surely, 2^1425572666 is an apocalyptic number.

1425572666 is a deficient number, since it is larger than the sum of its proper divisors (1018266214).

1425572666 is a wasteful number, since it uses less digits than its factorization.

1425572666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101826628.

The product of its digits is 604800, while the sum is 44.

The square root of 1425572666 is about 37756.7565609124. The cubic root of 1425572666 is about 1125.4592800624.

The spelling of 1425572666 in words is "one billion, four hundred twenty-five million, five hundred seventy-two thousand, six hundred sixty-six".