259999955 has 16 divisors (see below), whose sum is σ = 330873984. Its totient is φ = 195456000.

The previous prime is 259999951. The next prime is 259999969. The reversal of 259999955 is 559999952.

It is not a de Polignac number, because 259999955 - 2² = 259999951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259999951) 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, 61799 + ... + 65871.

It is an arithmetic number, because the mean of its divisors is an integer number (20679624).

Almost surely, 2^259999955 is an apocalyptic number.

259999955 is a deficient number, since it is larger than the sum of its proper divisors (70874029).

259999955 is a wasteful number, since it uses less digits than its factorization.

259999955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4846.

The product of its digits is 14762250, while the sum is 62.

The square root of 259999955 is about 16124.5141012063. The cubic root of 259999955 is about 638.2503930638.

The spelling of 259999955 in words is "two hundred fifty-nine million, nine hundred ninety-nine thousand, nine hundred fifty-five".