258265378 has 24 divisors (see below), whose sum is σ = 456364800. Its totient is φ = 109280808.

The previous prime is 258265351. The next prime is 258265409. The reversal of 258265378 is 873562852.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8938 + ... + 24421.

It is an arithmetic number, because the mean of its divisors is an integer number (19015200).

Almost surely, 2^258265378 is an apocalyptic number.

258265378 is a deficient number, since it is larger than the sum of its proper divisors (198099422).

258265378 is a wasteful number, since it uses less digits than its factorization.

258265378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33454 (or 33447 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 258265378 is about 16070.6371373384. The cubic root of 258265378 is about 636.8278728262.

The spelling of 258265378 in words is "two hundred fifty-eight million, two hundred sixty-five thousand, three hundred seventy-eight".