2565202949 has 32 divisors (see below), whose sum is σ = 2786254848. Its totient is φ = 2356200000.

The previous prime is 2565202919. The next prime is 2565202961. The reversal of 2565202949 is 9492025652.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565202949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565202909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16988024 + ... + 16988174.

It is an arithmetic number, because the mean of its divisors is an integer number (87070464).

Almost surely, 2^2565202949 is an apocalyptic number.

It is an amenable number.

2565202949 is a deficient number, since it is larger than the sum of its proper divisors (221051899).

2565202949 is a wasteful number, since it uses less digits than its factorization.

2565202949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 2565202949 is about 50647.8326189779. The cubic root of 2565202949 is about 1368.9068924525.

The spelling of 2565202949 in words is "two billion, five hundred sixty-five million, two hundred two thousand, nine hundred forty-nine".