2563505 has 8 divisors (see below), whose sum is σ = 3515712. Its totient is φ = 1757808.

The previous prime is 2563493. The next prime is 2563507. The reversal of 2563505 is 5053652.

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

It is a cyclic number.

It is not a de Polignac number, because 2563505 - 2⁴ = 2563489 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2563507) 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, 36587 + ... + 36656.

It is an arithmetic number, because the mean of its divisors is an integer number (439464).

2^2563505 is an apocalyptic number.

It is an amenable number.

2563505 is a deficient number, since it is larger than the sum of its proper divisors (952207).

2563505 is an equidigital number, since it uses as much as digits as its factorization.

2563505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73255.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 2563505 is about 1601.0949378472. The cubic root of 2563505 is about 136.8604791974.

The spelling of 2563505 in words is "two million, five hundred sixty-three thousand, five hundred five".