1325641879 has 4 divisors (see below), whose sum is σ = 1325796520. Its totient is φ = 1325487240.

The previous prime is 1325641847. The next prime is 1325641907. The reversal of 1325641879 is 9781465231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1325641879 - 2⁵ = 1325641847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325641829) 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, 63657 + ... + 81874.

It is an arithmetic number, because the mean of its divisors is an integer number (331449130).

Almost surely, 2^1325641879 is an apocalyptic number.

1325641879 is a deficient number, since it is larger than the sum of its proper divisors (154641).

1325641879 is an equidigital number, since it uses as much as digits as its factorization.

1325641879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154640.

The product of its digits is 362880, while the sum is 46.

The square root of 1325641879 is about 36409.3652649974. The cubic root of 1325641879 is about 1098.5219484653.

It can be divided in two parts, 1325 and 641879, that added together give a square (643204 = 802²).

The spelling of 1325641879 in words is "one billion, three hundred twenty-five million, six hundred forty-one thousand, eight hundred seventy-nine".