1325217638 has 8 divisors (see below), whose sum is σ = 1988285832. Its totient is φ = 662455696.

The previous prime is 1325217631. The next prime is 1325217679. The reversal of 1325217638 is 8367125231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325217631) 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, 65420 + ... + 83247.

It is an arithmetic number, because the mean of its divisors is an integer number (248535729).

Almost surely, 2^1325217638 is an apocalyptic number.

1325217638 is a deficient number, since it is larger than the sum of its proper divisors (663068194).

1325217638 is a wasteful number, since it uses less digits than its factorization.

1325217638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153126.

The product of its digits is 60480, while the sum is 38.

The square root of 1325217638 is about 36403.5388114947. The cubic root of 1325217638 is about 1098.4047504545.

The spelling of 1325217638 in words is "one billion, three hundred twenty-five million, two hundred seventeen thousand, six hundred thirty-eight".