25538377 has 2 divisors, whose sum is σ = 25538378. Its totient is φ = 25538376.

The previous prime is 25538371. The next prime is 25538411. The reversal of 25538377 is 77383552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18757561 + 6780816 = 4331^2 + 2604^2 .

It is a cyclic number.

It is not a de Polignac number, because 25538377 - 2¹⁵ = 25505609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25538371) 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 as a sum of consecutive naturals, namely, 12769188 + 12769189.

It is an arithmetic number, because the mean of its divisors is an integer number (12769189).

Almost surely, 2^25538377 is an apocalyptic number.

It is an amenable number.

25538377 is a deficient number, since it is larger than the sum of its proper divisors (1).

25538377 is an equidigital number, since it uses as much as digits as its factorization.

25538377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 40.

The square root of 25538377 is about 5053.5509297918. The cubic root of 25538377 is about 294.4858496049.

The spelling of 25538377 in words is "twenty-five million, five hundred thirty-eight thousand, three hundred seventy-seven".