1325811256 has 32 divisors (see below), whose sum is σ = 3099300480. Its totient is φ = 516549600.

The previous prime is 1325811251. The next prime is 1325811313. The reversal of 1325811256 is 6521185231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325811251) 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, 1075530 + ... + 1076761.

It is an arithmetic number, because the mean of its divisors is an integer number (96853140).

Almost surely, 2^1325811256 is an apocalyptic number.

It is an amenable number.

1325811256 is an abundant number, since it is smaller than the sum of its proper divisors (1773489224).

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

1325811256 is a wasteful number, since it uses less digits than its factorization.

1325811256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152315 (or 2152311 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 1325811256 is about 36411.6911993936. The cubic root of 1325811256 is about 1098.5687324500.

Adding to 1325811256 its reverse (6521185231), we get a palindrome (7846996487).

The spelling of 1325811256 in words is "one billion, three hundred twenty-five million, eight hundred eleven thousand, two hundred fifty-six".