2564502925 has 6 divisors (see below), whose sum is σ = 3179983658. Its totient is φ = 2051602320.

The previous prime is 2564502923. The next prime is 2564502949. The reversal of 2564502925 is 5292054652.

It can be written as a sum of positive squares in 3 ways, for example, as 133125444 + 2431377481 = 11538^2 + 49309^2 .

It is not a de Polignac number, because 2564502925 - 2¹ = 2564502923 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 (2564502923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51290034 + ... + 51290083.

Almost surely, 2^2564502925 is an apocalyptic number.

2564502925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2564502925 is a deficient number, since it is larger than the sum of its proper divisors (615480733).

2564502925 is a wasteful number, since it uses less digits than its factorization.

2564502925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102580127 (or 102580122 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 2564502925 is about 50640.9214469879. The cubic root of 2564502925 is about 1368.7823597640.

The spelling of 2564502925 in words is "two billion, five hundred sixty-four million, five hundred two thousand, nine hundred twenty-five".