25812593321 has 2 divisors, whose sum is σ = 25812593322. Its totient is φ = 25812593320.

The previous prime is 25812593293. The next prime is 25812593369. The reversal of 25812593321 is 12339521852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14275470400 + 11537122921 = 119480^2 + 107411^2 .

It is a cyclic number.

It is not a de Polignac number, because 25812593321 - 2³⁴ = 8632724137 is a prime.

It is not a weakly prime, because it can be changed into another prime (25812493321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12906296660 + 12906296661.

It is an arithmetic number, because the mean of its divisors is an integer number (12906296661).

Almost surely, 2^25812593321 is an apocalyptic number.

It is an amenable number.

25812593321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25812593321 is an equidigital number, since it uses as much as digits as its factorization.

25812593321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 41.

The spelling of 25812593321 in words is "twenty-five billion, eight hundred twelve million, five hundred ninety-three thousand, three hundred twenty-one".