2563642225 has 6 divisors (see below), whose sum is σ = 3178916390. Its totient is φ = 2050913760.

The previous prime is 2563642201. The next prime is 2563642271. The reversal of 2563642225 is 5222463652.

It can be written as a sum of positive squares in 3 ways, for example, as 725548096 + 1838094129 = 26936^2 + 42873^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2563642225 is a prime.

It is a super-2 number, since 2×2563642225² = 13144522915605901250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51272820 + ... + 51272869.

Almost surely, 2^2563642225 is an apocalyptic number.

2563642225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2563642225 is a deficient number, since it is larger than the sum of its proper divisors (615274165).

2563642225 is a wasteful number, since it uses less digits than its factorization.

2563642225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102545699 (or 102545694 counting only the distinct ones).

The product of its digits is 172800, while the sum is 37.

The square root of 2563642225 is about 50632.4226657189. The cubic root of 2563642225 is about 1368.6292121124.

The spelling of 2563642225 in words is "two billion, five hundred sixty-three million, six hundred forty-two thousand, two hundred twenty-five".