525261213 has 32 divisors (see below), whose sum is σ = 841289600. Its totient is φ = 322766208.

The previous prime is 525261197. The next prime is 525261221. The reversal of 525261213 is 312162525.

It is a happy number.

It is not a de Polignac number, because 525261213 - 2⁴ = 525261197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525261293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5145 + ... + 32817.

It is an arithmetic number, because the mean of its divisors is an integer number (26290300).

Almost surely, 2^525261213 is an apocalyptic number.

It is an amenable number.

525261213 is a deficient number, since it is larger than the sum of its proper divisors (316028387).

525261213 is a wasteful number, since it uses less digits than its factorization.

525261213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27738 (or 27732 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 525261213 is about 22918.5779009082. The cubic root of 525261213 is about 806.8480940152.

The spelling of 525261213 in words is "five hundred twenty-five million, two hundred sixty-one thousand, two hundred thirteen".