217095025 has 12 divisors (see below), whose sum is σ = 307654912. Its totient is φ = 148865040.

The previous prime is 217095019. The next prime is 217095031. The reversal of 217095025 is 520590712.

It is an interprime number because it is at equal distance from previous prime (217095019) and next prime (217095031).

It is not a de Polignac number, because 217095025 - 2¹⁵ = 217062257 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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 620097 + ... + 620446.

Almost surely, 2^217095025 is an apocalyptic number.

217095025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

217095025 is a deficient number, since it is larger than the sum of its proper divisors (90559887).

217095025 is a wasteful number, since it uses less digits than its factorization.

217095025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240560 (or 1240555 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 217095025 is about 14734.1448682983. The cubic root of 217095025 is about 601.0122034836.

The spelling of 217095025 in words is "two hundred seventeen million, ninety-five thousand, twenty-five".