2565552506 has 16 divisors (see below), whose sum is σ = 4206541248. Its totient is φ = 1163836800.

The previous prime is 2565552499. The next prime is 2565552533. The reversal of 2565552506 is 6052555652.

It is a super-2 number, since 2×2565552506² = 13164119322085760072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104855 + ... + 126986.

It is an arithmetic number, because the mean of its divisors is an integer number (262908828).

Almost surely, 2^2565552506 is an apocalyptic number.

2565552506 is a deficient number, since it is larger than the sum of its proper divisors (1640988742).

2565552506 is a wasteful number, since it uses less digits than its factorization.

2565552506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232357.

The product of its (nonzero) digits is 450000, while the sum is 41.

The square root of 2565552506 is about 50651.2833598518. The cubic root of 2565552506 is about 1368.9690693722.

The spelling of 2565552506 in words is "two billion, five hundred sixty-five million, five hundred fifty-two thousand, five hundred six".