1325519801 has 4 divisors (see below), whose sum is σ = 1403491572. Its totient is φ = 1247548032.

The previous prime is 1325519779. The next prime is 1325519821. The reversal of 1325519801 is 1089155231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1174844176 + 150675625 = 34276^2 + 12275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325519801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325519821) 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, 38985860 + ... + 38985893.

It is an arithmetic number, because the mean of its divisors is an integer number (350872893).

Almost surely, 2^1325519801 is an apocalyptic number.

It is an amenable number.

1325519801 is a deficient number, since it is larger than the sum of its proper divisors (77971771).

1325519801 is an equidigital number, since it uses as much as digits as its factorization.

1325519801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77971770.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 1325519801 is about 36407.6887621283. The cubic root of 1325519801 is about 1098.4882265677.

The spelling of 1325519801 in words is "one billion, three hundred twenty-five million, five hundred nineteen thousand, eight hundred one".