258401265 has 16 divisors (see below), whose sum is σ = 418089600. Its totient is φ = 136264832.

The previous prime is 258401263. The next prime is 258401267. The reversal of 258401265 is 562104852.

It is an interprime number because it is at equal distance from previous prime (258401263) and next prime (258401267).

It is a cyclic number.

It is not a de Polignac number, because 258401265 - 2¹ = 258401263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258401263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95445 + ... + 98114.

It is an arithmetic number, because the mean of its divisors is an integer number (26130600).

Almost surely, 2^258401265 is an apocalyptic number.

It is an amenable number.

258401265 is a deficient number, since it is larger than the sum of its proper divisors (159688335).

258401265 is a wasteful number, since it uses less digits than its factorization.

258401265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193656.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 258401265 is about 16074.8643851200. The cubic root of 258401265 is about 636.9395427903.

The spelling of 258401265 in words is "two hundred fifty-eight million, four hundred one thousand, two hundred sixty-five".