217041325 has 12 divisors (see below), whose sum is σ = 270017440. Its totient is φ = 173061360.

The previous prime is 217041311. The next prime is 217041373. The reversal of 217041325 is 523140712.

It is a happy number.

It is not a de Polignac number, because 217041325 - 2¹³ = 217033133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 217041325.

It is a congruent 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, 6465 + ... + 21814.

Almost surely, 2^217041325 is an apocalyptic number.

217041325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

217041325 is a deficient number, since it is larger than the sum of its proper divisors (52976115).

217041325 is a wasteful number, since it uses less digits than its factorization.

217041325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28596 (or 28591 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 217041325 is about 14732.3224577797. The cubic root of 217041325 is about 600.9626445147.

The spelling of 217041325 in words is "two hundred seventeen million, forty-one thousand, three hundred twenty-five".