25775388321 has 16 divisors (see below), whose sum is σ = 36396198144. Its totient is φ = 16169497344.

The previous prime is 25775388281. The next prime is 25775388343. The reversal of 25775388321 is 12388357752.

It is not a de Polignac number, because 25775388321 - 2⁶ = 25775388257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (25775388361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214611 + ... + 312423.

It is an arithmetic number, because the mean of its divisors is an integer number (2274762384).

Almost surely, 2^25775388321 is an apocalyptic number.

It is an amenable number.

25775388321 is a deficient number, since it is larger than the sum of its proper divisors (10620809823).

25775388321 is a wasteful number, since it uses less digits than its factorization.

25775388321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103000.

The product of its digits is 2822400, while the sum is 51.

The spelling of 25775388321 in words is "twenty-five billion, seven hundred seventy-five million, three hundred eighty-eight thousand, three hundred twenty-one".