3421665025 has 9 divisors (see below), whose sum is σ = 4243227331. Its totient is φ = 2737098040.

The previous prime is 3421665019. The next prime is 3421665041. The reversal of 3421665025 is 5205661243.

The square root of 3421665025 is 58495.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1231799409 + 2189865616 = 35097^2 + 46796^2 .

It is not a de Polignac number, because 3421665025 - 2⁵ = 3421664993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 286626 + ... + 298324.

Almost surely, 2^3421665025 is an apocalyptic number.

3421665025 is the 58495-th square number.

3421665025 is the 29248-th centered octagonal number.

It is an amenable number.

3421665025 is a deficient number, since it is larger than the sum of its proper divisors (821562306).

3421665025 is an frugal number, since it uses more digits than its factorization.

3421665025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23408 (or 11704 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The cubic root of 3421665025 is about 1506.8817167380.

The spelling of 3421665025 in words is "three billion, four hundred twenty-one million, six hundred sixty-five thousand, twenty-five".