259042657 has 4 divisors (see below), whose sum is σ = 259114240. Its totient is φ = 258971076.

The previous prime is 259042649. The next prime is 259042687. The reversal of 259042657 is 756240952.

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 259042657 - 2³ = 259042649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259042607) 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, 30057 + ... + 37702.

It is an arithmetic number, because the mean of its divisors is an integer number (64778560).

Almost surely, 2^259042657 is an apocalyptic number.

It is an amenable number.

259042657 is a deficient number, since it is larger than the sum of its proper divisors (71583).

259042657 is an equidigital number, since it uses as much as digits as its factorization.

259042657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71582.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 259042657 is about 16094.8021733726. The cubic root of 259042657 is about 637.4661015936.

It can be divided in two parts, 25904 and 2657, that added together give a 4-th power (28561 = 13⁴).

The spelling of 259042657 in words is "two hundred fifty-nine million, forty-two thousand, six hundred fifty-seven".