213064145121525 has 48 divisors (see below), whose sum is σ = 358256447709120. Its totient is φ = 111702038156800.

The previous prime is 213064145121497. The next prime is 213064145121559. The reversal of 213064145121525 is 525121541460312.

It is not a de Polignac number, because 213064145121525 - 2¹⁷ = 213064144990453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79360615 + ... + 82001435.

It is an arithmetic number, because the mean of its divisors is an integer number (7463675993940).

Almost surely, 2^{213064145121525} is an apocalyptic number.

213064145121525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213064145121525 is a deficient number, since it is larger than the sum of its proper divisors (145192302587595).

213064145121525 is a wasteful number, since it uses less digits than its factorization.

213064145121525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659126 (or 2659121 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

Adding to 213064145121525 its reverse (525121541460312), we get a palindrome (738185686581837).

The spelling of 213064145121525 in words is "two hundred thirteen trillion, sixty-four billion, one hundred forty-five million, one hundred twenty-one thousand, five hundred twenty-five".