25328280377 has 2 divisors, whose sum is σ = 25328280378. Its totient is φ = 25328280376.

The previous prime is 25328280361. The next prime is 25328280379. The reversal of 25328280377 is 77308282352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16420884736 + 8907395641 = 128144^2 + 94379^2 .

It is a cyclic number.

It is not a de Polignac number, because 25328280377 - 2⁴ = 25328280361 is a prime.

It is a super-3 number, since 3×25328280377³ (a number of 32 digits) contains 333 as substring.

Together with 25328280379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25328280379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12664140188 + 12664140189.

It is an arithmetic number, because the mean of its divisors is an integer number (12664140189).

Almost surely, 2^25328280377 is an apocalyptic number.

It is an amenable number.

25328280377 is a deficient number, since it is larger than the sum of its proper divisors (1).

25328280377 is an equidigital number, since it uses as much as digits as its factorization.

25328280377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 25328280377 in words is "twenty-five billion, three hundred twenty-eight million, two hundred eighty thousand, three hundred seventy-seven".