2585006464 has 16 divisors (see below), whose sum is σ = 5149817820. Its totient is φ = 1292503168.

The previous prime is 2585006441. The next prime is 2585006467. The reversal of 2585006464 is 4646005852.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585006467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10097554 + ... + 10097809.

Almost surely, 2^2585006464 is an apocalyptic number.

It is an amenable number.

2585006464 is a deficient number, since it is larger than the sum of its proper divisors (2564811356).

2585006464 is an equidigital number, since it uses as much as digits as its factorization.

2585006464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20195377 (or 20195365 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 2585006464 is about 50842.9588438753. The cubic root of 2585006464 is about 1372.4205461397.

The spelling of 2585006464 in words is "two billion, five hundred eighty-five million, six thousand, four hundred sixty-four".