1325666004 has 24 divisors (see below), whose sum is σ = 3331161120. Its totient is φ = 407897184.

The previous prime is 1325666003. The next prime is 1325666033. The reversal of 1325666004 is 4006665231.

It is a super-2 number, since 2×1325666004² = 3514780708322656032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325666003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4248774 + ... + 4249085.

It is an arithmetic number, because the mean of its divisors is an integer number (138798380).

Almost surely, 2^1325666004 is an apocalyptic number.

It is an amenable number.

1325666004 is an abundant number, since it is smaller than the sum of its proper divisors (2005495116).

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

1325666004 is a wasteful number, since it uses less digits than its factorization.

1325666004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8497879 (or 8497877 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1325666004 is about 36409.6965656128. The cubic root of 1325666004 is about 1098.5286123267.

The spelling of 1325666004 in words is "one billion, three hundred twenty-five million, six hundred sixty-six thousand, four".