2780505275 has 12 divisors (see below), whose sum is σ = 3455694000. Its totient is φ = 2219328480.

The previous prime is 2780505253. The next prime is 2780505313. The reversal of 2780505275 is 5725050872.

It is not a de Polignac number, because 2780505275 - 2¹⁴ = 2780488891 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115700 + ... + 137649.

It is an arithmetic number, because the mean of its divisors is an integer number (287974500).

Almost surely, 2^2780505275 is an apocalyptic number.

2780505275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2780505275 is a deficient number, since it is larger than the sum of its proper divisors (675188725).

2780505275 is a wasteful number, since it uses less digits than its factorization.

2780505275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253798 (or 253793 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 2780505275 is about 52730.4966314561. The cubic root of 2780505275 is about 1406.1810503807.

The spelling of 2780505275 in words is "two billion, seven hundred eighty million, five hundred five thousand, two hundred seventy-five".