78245259 has 8 divisors (see below), whose sum is σ = 104467152. Its totient is φ = 52093440.

The previous prime is 78245257. The next prime is 78245263. The reversal of 78245259 is 95254287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78245259 - 2¹ = 78245257 is a prime.

It is a super-2 number, since 2×78245259² = 12244641111954162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78245259.

It is not an unprimeable number, because it can be changed into a prime (78245257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14854 + ... + 19419.

It is an arithmetic number, because the mean of its divisors is an integer number (13058394).

Almost surely, 2^78245259 is an apocalyptic number.

78245259 is a deficient number, since it is larger than the sum of its proper divisors (26221893).

78245259 is a wasteful number, since it uses less digits than its factorization.

78245259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35037.

The product of its digits is 201600, while the sum is 42.

The square root of 78245259 is about 8845.6350252540. The cubic root of 78245259 is about 427.7132235466.

Subtracting 78245259 from its reverse (95254287), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 78245259 in words is "seventy-eight million, two hundred forty-five thousand, two hundred fifty-nine".