1325665401 has 8 divisors (see below), whose sum is σ = 1769094144. Its totient is φ = 883006800.

The previous prime is 1325665399. The next prime is 1325665403. The reversal of 1325665401 is 1045665231.

It is an interprime number because it is at equal distance from previous prime (1325665399) and next prime (1325665403).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1325665401 - 2¹ = 1325665399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1325665403) 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, 188506 + ... + 195411.

It is an arithmetic number, because the mean of its divisors is an integer number (221136768).

Almost surely, 2^1325665401 is an apocalyptic number.

It is an amenable number.

1325665401 is a deficient number, since it is larger than the sum of its proper divisors (443428743).

1325665401 is a wasteful number, since it uses less digits than its factorization.

1325665401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385071.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1325665401 is about 36409.6882848508. The cubic root of 1325665401 is about 1098.5284457657.

The spelling of 1325665401 in words is "one billion, three hundred twenty-five million, six hundred sixty-five thousand, four hundred one".