1325889785 has 32 divisors (see below), whose sum is σ = 1767744000. Its totient is φ = 946632960.

The previous prime is 1325889781. The next prime is 1325889793. The reversal of 1325889785 is 5879885231.

It is a happy number.

It is not a de Polignac number, because 1325889785 - 2² = 1325889781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1325889785.

It is not an unprimeable number, because it can be changed into a prime (1325889781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 855191 + ... + 856739.

It is an arithmetic number, because the mean of its divisors is an integer number (55242000).

Almost surely, 2^1325889785 is an apocalyptic number.

It is an amenable number.

1325889785 is a deficient number, since it is larger than the sum of its proper divisors (441854215).

1325889785 is a wasteful number, since it uses less digits than its factorization.

1325889785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its digits is 4838400, while the sum is 56.

The square root of 1325889785 is about 36412.7695321298. The cubic root of 1325889785 is about 1098.5904217617.

The spelling of 1325889785 in words is "one billion, three hundred twenty-five million, eight hundred eighty-nine thousand, seven hundred eighty-five".