213520600412525 has 36 divisors (see below), whose sum is σ = 307994938226388. Its totient is φ = 146413001226240.

The previous prime is 213520600412507. The next prime is 213520600412527. The reversal of 213520600412525 is 525214006025312.

It can be written as a sum of positive squares in 6 ways, for example, as 17695197512356 + 195825402900169 = 4206566^2 + 13993763^2 .

It is not a de Polignac number, because 213520600412525 - 2¹² = 213520600408429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213520600412527) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 178396877 + ... + 179589773.

It is an arithmetic number, because the mean of its divisors is an integer number (8555414950733).

Almost surely, 2^{213520600412525} is an apocalyptic number.

213520600412525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213520600412525 is a deficient number, since it is larger than the sum of its proper divisors (94474337813863).

213520600412525 is a wasteful number, since it uses less digits than its factorization.

213520600412525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339038 (or 1339026 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 213520600412525 its reverse (525214006025312), we get a palindrome (738734606437837).

The spelling of 213520600412525 in words is "two hundred thirteen trillion, five hundred twenty billion, six hundred million, four hundred twelve thousand, five hundred twenty-five".