2605778275 has 48 divisors (see below), whose sum is σ = 3614232960. Its totient is φ = 1852070400.

The previous prime is 2605778177. The next prime is 2605778281. The reversal of 2605778275 is 5728775062.

It is not a de Polignac number, because 2605778275 - 2⁹ = 2605777763 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3770680 + ... + 3771370.

It is an arithmetic number, because the mean of its divisors is an integer number (75296520).

Almost surely, 2^2605778275 is an apocalyptic number.

2605778275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2605778275 is a deficient number, since it is larger than the sum of its proper divisors (1008454685).

2605778275 is a wasteful number, since it uses less digits than its factorization.

2605778275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1199 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 49.

The square root of 2605778275 is about 51046.8243380526. The cubic root of 2605778275 is about 1376.0867705656.

The spelling of 2605778275 in words is "two billion, six hundred five million, seven hundred seventy-eight thousand, two hundred seventy-five".