2505103261 has 4 divisors (see below), whose sum is σ = 2535285312. Its totient is φ = 2474921212.

The previous prime is 2505103231. The next prime is 2505103277. The reversal of 2505103261 is 1623015052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2505103261 - 2⁹ = 2505102749 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 (2505103231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15090901 + ... + 15091066.

It is an arithmetic number, because the mean of its divisors is an integer number (633821328).

Almost surely, 2^2505103261 is an apocalyptic number.

It is an amenable number.

2505103261 is a deficient number, since it is larger than the sum of its proper divisors (30182051).

2505103261 is an equidigital number, since it uses as much as digits as its factorization.

2505103261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30182050.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2505103261 is about 50051.0065932744. The cubic root of 2505103261 is about 1358.1316727370.

The spelling of 2505103261 in words is "two billion, five hundred five million, one hundred three thousand, two hundred sixty-one".