258401266 has 16 divisors (see below), whose sum is σ = 398505240. Its totient is φ = 125573760.

The previous prime is 258401263. The next prime is 258401267. The reversal of 258401266 is 662104852.

It can be written as a sum of positive squares in 4 ways, for example, as 234733041 + 23668225 = 15321^2 + 4865^2 .

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 7 ways as a sum of consecutive naturals, for example, 126340 + ... + 128368.

Almost surely, 2^258401266 is an apocalyptic number.

258401266 is a deficient number, since it is larger than the sum of its proper divisors (140103974).

258401266 is a wasteful number, since it uses less digits than its factorization.

258401266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 258401266 is about 16074.8644162245. The cubic root of 258401266 is about 636.9395436119.

The spelling of 258401266 in words is "two hundred fifty-eight million, four hundred one thousand, two hundred sixty-six".