2500565136 has 80 divisors (see below), whose sum is σ = 6706445760. Its totient is φ = 801902080.

The previous prime is 2500565101. The next prime is 2500565189. The reversal of 2500565136 is 6315650052.

It is a junction number, because it is equal to n+sod(n) for n = 2500565097 and 2500565106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404791 + ... + 410921.

It is an arithmetic number, because the mean of its divisors is an integer number (83830572).

Almost surely, 2^2500565136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2500565136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3353222880).

2500565136 is an abundant number, since it is smaller than the sum of its proper divisors (4205880624).

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

2500565136 is a wasteful number, since it uses less digits than its factorization.

2500565136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464 (or 6458 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 2500565136 is about 50005.6510406574. The cubic root of 2500565136 is about 1357.3110682667.

The spelling of 2500565136 in words is "two billion, five hundred million, five hundred sixty-five thousand, one hundred thirty-six".