258523116 has 12 divisors (see below), whose sum is σ = 603220632. Its totient is φ = 86174368.

The previous prime is 258523061. The next prime is 258523123. The reversal of 258523116 is 611325852.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10771785 + ... + 10771808.

It is an arithmetic number, because the mean of its divisors is an integer number (50268386).

Almost surely, 2^258523116 is an apocalyptic number.

It is an amenable number.

258523116 is an abundant number, since it is smaller than the sum of its proper divisors (344697516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258523116 is a wasteful number, since it uses less digits than its factorization.

258523116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21543600 (or 21543598 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 258523116 is about 16078.6540481472. The cubic root of 258523116 is about 637.0396448853.

Adding to 258523116 its reverse (611325852), we get a palindrome (869848968).

The spelling of 258523116 in words is "two hundred fifty-eight million, five hundred twenty-three thousand, one hundred sixteen".