259013509 has 4 divisors (see below), whose sum is σ = 261434304. Its totient is φ = 256592716.

The previous prime is 259013507. The next prime is 259013543. The reversal of 259013509 is 905310952.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 259013509 - 2¹ = 259013507 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 (259013501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210237 + ... + 1210450.

It is an arithmetic number, because the mean of its divisors is an integer number (65358576).

Almost surely, 2^259013509 is an apocalyptic number.

It is an amenable number.

259013509 is a deficient number, since it is larger than the sum of its proper divisors (2420795).

259013509 is a wasteful number, since it uses less digits than its factorization.

259013509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420794.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 259013509 is about 16093.8966381669. The cubic root of 259013509 is about 637.4421910415.

The spelling of 259013509 in words is "two hundred fifty-nine million, thirteen thousand, five hundred nine".