213152242525 has 12 divisors (see below), whose sum is σ = 269295740532. Its totient is φ = 167304400640.

The previous prime is 213152242517. The next prime is 213152242601. The reversal of 213152242525 is 525242251312.

It can be written as a sum of positive squares in 6 ways, for example, as 2121339364 + 211030903161 = 46058^2 + 459381^2 .

It is not a de Polignac number, because 213152242525 - 2³ = 213152242517 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 11 ways as a sum of consecutive naturals, for example, 80433484 + ... + 80436133.

It is an arithmetic number, because the mean of its divisors is an integer number (22441311711).

Almost surely, 2^213152242525 is an apocalyptic number.

213152242525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213152242525 is a deficient number, since it is larger than the sum of its proper divisors (56143498007).

213152242525 is a wasteful number, since it uses less digits than its factorization.

213152242525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160869680 (or 160869675 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

Adding to 213152242525 its reverse (525242251312), we get a palindrome (738394493837).

The spelling of 213152242525 in words is "two hundred thirteen billion, one hundred fifty-two million, two hundred forty-two thousand, five hundred twenty-five".