258885265 has 16 divisors (see below), whose sum is σ = 331160400. Its totient is φ = 193607680.

The previous prime is 258885251. The next prime is 258885283. The reversal of 258885265 is 562588852.

It can be written as a sum of positive squares in 8 ways, for example, as 576081 + 258309184 = 759^2 + 16072^2 .

It is a de Polignac number, because none of the positive numbers 2^k-258885265 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2445 + ... + 22885.

It is an arithmetic number, because the mean of its divisors is an integer number (20697525).

Almost surely, 2^258885265 is an apocalyptic number.

It is an amenable number.

258885265 is a deficient number, since it is larger than the sum of its proper divisors (72275135).

258885265 is a wasteful number, since it uses less digits than its factorization.

258885265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20612.

The product of its digits is 1536000, while the sum is 49.

The square root of 258885265 is about 16089.9119015612. The cubic root of 258885265 is about 637.3369692042.

The spelling of 258885265 in words is "two hundred fifty-eight million, eight hundred eighty-five thousand, two hundred sixty-five".