265416890 has 32 divisors (see below), whose sum is σ = 507911040. Its totient is φ = 99576000.

The previous prime is 265416883. The next prime is 265416901. The reversal of 265416890 is 98614562.

It is a happy number.

It is a super-2 number, since 2×265416890² = 140892250994544200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12275 + ... + 26105.

It is an arithmetic number, because the mean of its divisors is an integer number (15872220).

Almost surely, 2^265416890 is an apocalyptic number.

265416890 is a deficient number, since it is larger than the sum of its proper divisors (242494150).

265416890 is a wasteful number, since it uses less digits than its factorization.

265416890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13958.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 265416890 is about 16291.6202386380. The cubic root of 265416890 is about 642.6524763404.

The spelling of 265416890 in words is "two hundred sixty-five million, four hundred sixteen thousand, eight hundred ninety".