2585502656 has 56 divisors (see below), whose sum is σ = 5790072240. Its totient is φ = 1134694400.

The previous prime is 2585502643. The next prime is 2585502659. The reversal of 2585502656 is 6562055852.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585502659) 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, 42905 + ... + 83736.

Almost surely, 2^2585502656 is an apocalyptic number.

It is an amenable number.

2585502656 is an abundant number, since it is smaller than the sum of its proper divisors (3204569584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2585502656 is a wasteful number, since it uses less digits than its factorization.

2585502656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126693 (or 126683 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 44.

The square root of 2585502656 is about 50847.8382628013. The cubic root of 2585502656 is about 1372.5083525647.

The spelling of 2585502656 in words is "two billion, five hundred eighty-five million, five hundred two thousand, six hundred fifty-six".