25971377 has 2 divisors, whose sum is σ = 25971378. Its totient is φ = 25971376.

The previous prime is 25971353. The next prime is 25971389. The reversal of 25971377 is 77317952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18181696 + 7789681 = 4264^2 + 2791^2 .

It is a cyclic number.

It is not a de Polignac number, because 25971377 - 2⁶ = 25971313 is a prime.

It is a super-2 number, since 2×25971377² = 1349024846552258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25971317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12985688 + 12985689.

It is an arithmetic number, because the mean of its divisors is an integer number (12985689).

Almost surely, 2^25971377 is an apocalyptic number.

It is an amenable number.

25971377 is a deficient number, since it is larger than the sum of its proper divisors (1).

25971377 is an equidigital number, since it uses as much as digits as its factorization.

25971377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92610, while the sum is 41.

The square root of 25971377 is about 5096.2120246316. The cubic root of 25971377 is about 296.1408547116.

The spelling of 25971377 in words is "twenty-five million, nine hundred seventy-one thousand, three hundred seventy-seven".