25644655245 has 32 divisors (see below), whose sum is σ = 44768807424. Its totient is φ = 12431764800.

The previous prime is 25644655151. The next prime is 25644655247. The reversal of 25644655245 is 54255644652.

It is not a de Polignac number, because 25644655245 - 2⁷ = 25644655117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25644655194 and 25644655203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25644655247) 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 31 ways as a sum of consecutive naturals, for example, 1829634 + ... + 1843596.

It is an arithmetic number, because the mean of its divisors is an integer number (1399025232).

Almost surely, 2^25644655245 is an apocalyptic number.

It is an amenable number.

25644655245 is a deficient number, since it is larger than the sum of its proper divisors (19124152179).

25644655245 is a wasteful number, since it uses less digits than its factorization.

25644655245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25113.

The product of its digits is 5760000, while the sum is 48.

The spelling of 25644655245 in words is "twenty-five billion, six hundred forty-four million, six hundred fifty-five thousand, two hundred forty-five".