213625165 has 16 divisors (see below), whose sum is σ = 285591600. Its totient is φ = 152312832.

The previous prime is 213625147. The next prime is 213625171. The reversal of 213625165 is 561526312.

It can be written as a sum of positive squares in 8 ways, for example, as 2184484 + 211440681 = 1478^2 + 14541^2 .

It is a cyclic number.

It is not a de Polignac number, because 213625165 - 2¹³ = 213616973 is a prime.

It is a super-2 number, since 2×213625165² = 91271422242554450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54780 + ... + 58549.

It is an arithmetic number, because the mean of its divisors is an integer number (17849475).

Almost surely, 2^213625165 is an apocalyptic number.

It is an amenable number.

213625165 is a deficient number, since it is larger than the sum of its proper divisors (71966435).

213625165 is a wasteful number, since it uses less digits than its factorization.

213625165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113376.

The product of its digits is 10800, while the sum is 31.

The square root of 213625165 is about 14615.9216267740. The cubic root of 213625165 is about 597.7929703580.

The spelling of 213625165 in words is "two hundred thirteen million, six hundred twenty-five thousand, one hundred sixty-five".