245965805 has 32 divisors (see below), whose sum is σ = 312795648. Its totient is φ = 185472000.

The previous prime is 245965793. The next prime is 245965807. The reversal of 245965805 is 508569542.

It is not a de Polignac number, because 245965805 - 2¹⁶ = 245900269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245965807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1020485 + ... + 1020725.

It is an arithmetic number, because the mean of its divisors is an integer number (9774864).

Almost surely, 2^245965805 is an apocalyptic number.

It is an amenable number.

245965805 is a deficient number, since it is larger than the sum of its proper divisors (66829843).

245965805 is a wasteful number, since it uses less digits than its factorization.

245965805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 245965805 is about 15683.2970066884. The cubic root of 245965805 is about 626.5536217484.

The spelling of 245965805 in words is "two hundred forty-five million, nine hundred sixty-five thousand, eight hundred five".