2505456461 has 4 divisors (see below), whose sum is σ = 2505831552. Its totient is φ = 2505081372.

The previous prime is 2505456427. The next prime is 2505456497. The reversal of 2505456461 is 1646545052.

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 2505456461 - 2¹⁰ = 2505455437 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 (2505456661) 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, 177341 + ... + 190946.

It is an arithmetic number, because the mean of its divisors is an integer number (626457888).

Almost surely, 2^2505456461 is an apocalyptic number.

It is an amenable number.

2505456461 is a deficient number, since it is larger than the sum of its proper divisors (375091).

2505456461 is an equidigital number, since it uses as much as digits as its factorization.

2505456461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375090.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 2505456461 is about 50054.5348694801. The cubic root of 2505456461 is about 1358.1954983913.

The spelling of 2505456461 in words is "two billion, five hundred five million, four hundred fifty-six thousand, four hundred sixty-one".