2563385 has 24 divisors (see below), whose sum is σ = 3575040. Its totient is φ = 1758240.

The previous prime is 2563381. The next prime is 2563387. The reversal of 2563385 is 5833652.

It is not a de Polignac number, because 2563385 - 2² = 2563381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2563381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11384 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (148960).

2^2563385 is an apocalyptic number.

It is an amenable number.

2563385 is a deficient number, since it is larger than the sum of its proper divisors (1011655).

2563385 is a wasteful number, since it uses less digits than its factorization.

2563385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 258 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 2563385 is about 1601.0574630537. The cubic root of 2563385 is about 136.8583436429.

The spelling of 2563385 in words is "two million, five hundred sixty-three thousand, three hundred eighty-five".