2635564225 has 36 divisors (see below), whose sum is σ = 3932811900. Its totient is φ = 1744901760.

The previous prime is 2635564223. The next prime is 2635564249. The reversal of 2635564225 is 5224655362.

It can be written as a sum of positive squares in 6 ways, for example, as 118635664 + 2516928561 = 10892^2 + 50169^2 .

It is not a de Polignac number, because 2635564225 - 2¹ = 2635564223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2635564223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1570 + ... + 72619.

It is an arithmetic number, because the mean of its divisors is an integer number (109244775).

Almost surely, 2^2635564225 is an apocalyptic number.

2635564225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2635564225 is a deficient number, since it is larger than the sum of its proper divisors (1297247675).

2635564225 is a wasteful number, since it uses less digits than its factorization.

2635564225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74242 (or 74230 counting only the distinct ones).

The product of its digits is 432000, while the sum is 40.

The square root of 2635564225 is about 51337.7465905936. The cubic root of 2635564225 is about 1381.3101443205.

The spelling of 2635564225 in words is "two billion, six hundred thirty-five million, five hundred sixty-four thousand, two hundred twenty-five".