780745255 has 4 divisors (see below), whose sum is σ = 936894312. Its totient is φ = 624596200.

The previous prime is 780745243. The next prime is 780745267. The reversal of 780745255 is 552547087.

780745255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552547087 = 47 ⋅11756321.

It is an interprime number because it is at equal distance from previous prime (780745243) and next prime (780745267).

It is not a de Polignac number, because 780745255 - 2⁵ = 780745223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78074521 + ... + 78074530.

It is an arithmetic number, because the mean of its divisors is an integer number (234223578).

Almost surely, 2^780745255 is an apocalyptic number.

780745255 is a deficient number, since it is larger than the sum of its proper divisors (156149057).

780745255 is a wasteful number, since it uses less digits than its factorization.

780745255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156149056.

The product of its (nonzero) digits is 392000, while the sum is 43.

The square root of 780745255 is about 27941.8191068513. The cubic root of 780745255 is about 920.8094856383.

The spelling of 780745255 in words is "seven hundred eighty million, seven hundred forty-five thousand, two hundred fifty-five".