1325903611 has 4 divisors (see below), whose sum is σ = 1326033072. Its totient is φ = 1325774152.

The previous prime is 1325903603. The next prime is 1325903641. The reversal of 1325903611 is 1163095231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1163095231 = 31 ⋅37519201.

It is a cyclic number.

It is not a de Polignac number, because 1325903611 - 2³ = 1325903603 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325903641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47911 + ... + 70336.

It is an arithmetic number, because the mean of its divisors is an integer number (331508268).

Almost surely, 2^1325903611 is an apocalyptic number.

1325903611 is a deficient number, since it is larger than the sum of its proper divisors (129461).

1325903611 is a wasteful number, since it uses less digits than its factorization.

1325903611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129460.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1325903611 is about 36412.9593826154. The cubic root of 1325903611 is about 1098.5942403442.

Adding to 1325903611 its reverse (1163095231), we get a palindrome (2488998842).

The spelling of 1325903611 in words is "one billion, three hundred twenty-five million, nine hundred three thousand, six hundred eleven".