2564700625 has 10 divisors (see below), whose sum is σ = 3204850682. Its totient is φ = 2051760000.

The previous prime is 2564700539. The next prime is 2564700641. The reversal of 2564700625 is 5260074652.

It can be written as a sum of positive squares in 5 ways, for example, as 1558986256 + 1005714369 = 39484^2 + 31713^2 .

It is not a de Polignac number, because 2564700625 - 2⁷ = 2564700497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 2051136 + ... + 2052385.

Almost surely, 2^2564700625 is an apocalyptic number.

2564700625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2564700625 is a deficient number, since it is larger than the sum of its proper divisors (640150057).

2564700625 is an frugal number, since it uses more digits than its factorization.

2564700625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103541 (or 4103526 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 2564700625 is about 50642.8733880691. The cubic root of 2564700625 is about 1368.8175324436.

The spelling of 2564700625 in words is "two billion, five hundred sixty-four million, seven hundred thousand, six hundred twenty-five".