1325445506 has 16 divisors (see below), whose sum is σ = 2478755520. Its totient is φ = 516407280.

The previous prime is 1325445503. The next prime is 1325445547. The reversal of 1325445506 is 6055445231.

It is a super-4 number, since 4×1325445506⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1325445503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4303241 + ... + 4303548.

It is an arithmetic number, because the mean of its divisors is an integer number (154922220).

Almost surely, 2^1325445506 is an apocalyptic number.

1325445506 is a deficient number, since it is larger than the sum of its proper divisors (1153310014).

1325445506 is a wasteful number, since it uses less digits than its factorization.

1325445506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606809.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 1325445506 is about 36406.6684276384. The cubic root of 1325445506 is about 1098.4677028688.

The spelling of 1325445506 in words is "one billion, three hundred twenty-five million, four hundred forty-five thousand, five hundred six".