2561104375 has 10 divisors (see below), whose sum is σ = 3200356808. Its totient is φ = 2048883000.

The previous prime is 2561104367. The next prime is 2561104471. The reversal of 2561104375 is 5734011652.

It is not a de Polignac number, because 2561104375 - 2³ = 2561104367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2561104375.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2048259 + ... + 2049508.

Almost surely, 2^2561104375 is an apocalyptic number.

2561104375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2561104375 is a deficient number, since it is larger than the sum of its proper divisors (639252433).

2561104375 is an frugal number, since it uses more digits than its factorization.

2561104375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097787 (or 4097772 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 2561104375 is about 50607.3549496513. The cubic root of 2561104375 is about 1368.1774430907.

The spelling of 2561104375 in words is "two billion, five hundred sixty-one million, one hundred four thousand, three hundred seventy-five".