25878737 has 2 divisors, whose sum is σ = 25878738. Its totient is φ = 25878736.

The previous prime is 25878691. The next prime is 25878739. The reversal of 25878737 is 73787852.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13424896 + 12453841 = 3664^2 + 3529^2 .

It is a cyclic number.

It is not a de Polignac number, because 25878737 - 2⁶ = 25878673 is a prime.

Together with 25878739, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25878691 and 25878700.

It is not a weakly prime, because it can be changed into another prime (25878739) 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, 12939368 + 12939369.

It is an arithmetic number, because the mean of its divisors is an integer number (12939369).

Almost surely, 2^25878737 is an apocalyptic number.

It is an amenable number.

25878737 is a deficient number, since it is larger than the sum of its proper divisors (1).

25878737 is an equidigital number, since it uses as much as digits as its factorization.

25878737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658560, while the sum is 47.

The square root of 25878737 is about 5087.1148011422. The cubic root of 25878737 is about 295.7883233689.

The spelling of 25878737 in words is "twenty-five million, eight hundred seventy-eight thousand, seven hundred thirty-seven".