213117325 has 12 divisors (see below), whose sum is σ = 264535648. Its totient is φ = 170319600.

The previous prime is 213117313. The next prime is 213117341. The reversal of 213117325 is 523711312.

It is a happy number.

It is not a de Polignac number, because 213117325 - 2¹³ = 213109133 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213117325.

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, 24280 + ... + 31870.

Almost surely, 2^213117325 is an apocalyptic number.

213117325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213117325 is a deficient number, since it is larger than the sum of its proper divisors (51418323).

213117325 is a wasteful number, since it uses less digits than its factorization.

213117325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8724 (or 8719 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 213117325 is about 14598.5384542426. The cubic root of 213117325 is about 597.3188937756.

Adding to 213117325 its reverse (523711312), we get a palindrome (736828637).

The spelling of 213117325 in words is "two hundred thirteen million, one hundred seventeen thousand, three hundred twenty-five".