213524525 has 24 divisors (see below), whose sum is σ = 282196224. Its totient is φ = 159896000.

The previous prime is 213524513. The next prime is 213524551. The reversal of 213524525 is 525425312.

It is not a de Polignac number, because 213524525 - 2¹⁸ = 213262381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23075 + ... + 30975.

It is an arithmetic number, because the mean of its divisors is an integer number (11758176).

Almost surely, 2^213524525 is an apocalyptic number.

213524525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213524525 is a deficient number, since it is larger than the sum of its proper divisors (68671699).

213524525 is a wasteful number, since it uses less digits than its factorization.

213524525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7981 (or 7976 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 213524525 is about 14612.4784003262. The cubic root of 213524525 is about 597.6990810847.

Adding to 213524525 its reverse (525425312), we get a palindrome (738949837).

The spelling of 213524525 in words is "two hundred thirteen million, five hundred twenty-four thousand, five hundred twenty-five".