2561422503 has 8 divisors (see below), whose sum is σ = 3417586288. Its totient is φ = 1706436864.

The previous prime is 2561422459. The next prime is 2561422537. The reversal of 2561422503 is 3052241652.

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

It is not a de Polignac number, because 2561422503 - 2⁹ = 2561421991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561422553) 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, 289450 + ... + 298167.

It is an arithmetic number, because the mean of its divisors is an integer number (427198286).

Almost surely, 2^2561422503 is an apocalyptic number.

2561422503 is a deficient number, since it is larger than the sum of its proper divisors (856163785).

2561422503 is a wasteful number, since it uses less digits than its factorization.

2561422503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589073.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 2561422503 is about 50610.4979524999. The cubic root of 2561422503 is about 1368.2340902071.

The spelling of 2561422503 in words is "two billion, five hundred sixty-one million, four hundred twenty-two thousand, five hundred three".