25261877 has 2 divisors, whose sum is σ = 25261878. Its totient is φ = 25261876.

The previous prime is 25261837. The next prime is 25261879. The reversal of 25261877 is 77816252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23902321 + 1359556 = 4889^2 + 1166^2 .

It is a cyclic number.

It is not a de Polignac number, because 25261877 - 2¹⁶ = 25196341 is a prime.

Together with 25261879, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25261877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25261879) 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, 12630938 + 12630939.

It is an arithmetic number, because the mean of its divisors is an integer number (12630939).

Almost surely, 2^25261877 is an apocalyptic number.

It is an amenable number.

25261877 is a deficient number, since it is larger than the sum of its proper divisors (1).

25261877 is an equidigital number, since it uses as much as digits as its factorization.

25261877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 38.

The square root of 25261877 is about 5026.1194772906. The cubic root of 25261877 is about 293.4192068082.

The spelling of 25261877 in words is "twenty-five million, two hundred sixty-one thousand, eight hundred seventy-seven".