2566512523 has 4 divisors (see below), whose sum is σ = 2678100048. Its totient is φ = 2454925000.

The previous prime is 2566512493. The next prime is 2566512527. The reversal of 2566512523 is 3252156652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2566512523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2566512527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55793728 + ... + 55793773.

It is an arithmetic number, because the mean of its divisors is an integer number (669525012).

Almost surely, 2^2566512523 is an apocalyptic number.

2566512523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2566512523 is a deficient number, since it is larger than the sum of its proper divisors (111587525).

2566512523 is a wasteful number, since it uses less digits than its factorization.

2566512523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111587524.

The product of its digits is 108000, while the sum is 37.

The square root of 2566512523 is about 50660.7592027597. The cubic root of 2566512523 is about 1369.1398018861.

The spelling of 2566512523 in words is "two billion, five hundred sixty-six million, five hundred twelve thousand, five hundred twenty-three".