1329170025 has 12 divisors (see below), whose sum is σ = 2197561232. Its totient is φ = 708890640.

The previous prime is 1329169997. The next prime is 1329170039. The reversal of 1329170025 is 5200719231.

It is not a de Polignac number, because 1329170025 - 2⁵ = 1329169993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1329169974 and 1329170001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8861059 + ... + 8861208.

Almost surely, 2^1329170025 is an apocalyptic number.

1329170025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1329170025 is a deficient number, since it is larger than the sum of its proper divisors (868391207).

1329170025 is a wasteful number, since it uses less digits than its factorization.

1329170025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17722280 (or 17722275 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 1329170025 is about 36457.7841482447. The cubic root of 1329170025 is about 1099.4956434405.

Adding to 1329170025 its reverse (5200719231), we get a palindrome (6529889256).

The spelling of 1329170025 in words is "one billion, three hundred twenty-nine million, one hundred seventy thousand, twenty-five".