258016265 has 8 divisors (see below), whose sum is σ = 333436488. Its totient is φ = 190535040.

The previous prime is 258016247. The next prime is 258016279. The reversal of 258016265 is 562610852.

It can be written as a sum of positive squares in 4 ways, for example, as 26337424 + 231678841 = 5132^2 + 15221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 258016265 - 2¹⁶ = 257950729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984676 + ... + 1984805.

It is an arithmetic number, because the mean of its divisors is an integer number (41679561).

Almost surely, 2^258016265 is an apocalyptic number.

It is an amenable number.

258016265 is a deficient number, since it is larger than the sum of its proper divisors (75420223).

258016265 is a wasteful number, since it uses less digits than its factorization.

258016265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969499.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 258016265 is about 16062.8847035643. The cubic root of 258016265 is about 636.6230536112.

The spelling of 258016265 in words is "two hundred fifty-eight million, sixteen thousand, two hundred sixty-five".