171249025 has 12 divisors (see below), whose sum is σ = 212518144. Its totient is φ = 136890000.

The previous prime is 171248993. The next prime is 171249037. The reversal of 171249025 is 520942171.

It is not a de Polignac number, because 171249025 - 2⁵ = 171248993 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47020 + ... + 50530.

Almost surely, 2^171249025 is an apocalyptic number.

It is an amenable number.

171249025 is a deficient number, since it is larger than the sum of its proper divisors (41269119).

171249025 is a wasteful number, since it uses less digits than its factorization.

171249025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 171249025 is about 13086.2150754143. The cubic root of 171249025 is about 555.3192168439.

The spelling of 171249025 in words is "one hundred seventy-one million, two hundred forty-nine thousand, twenty-five".