1325078421 has 4 divisors (see below), whose sum is σ = 1766771232. Its totient is φ = 883385612.

The previous prime is 1325078393. The next prime is 1325078429. The reversal of 1325078421 is 1248705231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1325078421 - 2⁶ = 1325078357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325078429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220846401 + ... + 220846406.

It is an arithmetic number, because the mean of its divisors is an integer number (441692808).

Almost surely, 2^1325078421 is an apocalyptic number.

It is an amenable number.

1325078421 is a deficient number, since it is larger than the sum of its proper divisors (441692811).

1325078421 is an equidigital number, since it uses as much as digits as its factorization.

1325078421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441692810.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1325078421 is about 36401.6266257430. The cubic root of 1325078421 is about 1098.3662858369.

The spelling of 1325078421 in words is "one billion, three hundred twenty-five million, seventy-eight thousand, four hundred twenty-one".