25669937 has 2 divisors, whose sum is σ = 25669938. Its totient is φ = 25669936.

The previous prime is 25669927. The next prime is 25669957. The reversal of 25669937 is 73996652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15178816 + 10491121 = 3896^2 + 3239^2 .

It is a cyclic number.

It is not a de Polignac number, because 25669937 - 2⁴ = 25669921 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25669891 and 25669900.

It is not a weakly prime, because it can be changed into another prime (25669927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12834968 + 12834969.

It is an arithmetic number, because the mean of its divisors is an integer number (12834969).

Almost surely, 2^25669937 is an apocalyptic number.

It is an amenable number.

25669937 is a deficient number, since it is larger than the sum of its proper divisors (1).

25669937 is an equidigital number, since it uses as much as digits as its factorization.

25669937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 47.

The square root of 25669937 is about 5066.5507991137. The cubic root of 25669937 is about 294.9906613916.

The spelling of 25669937 in words is "twenty-five million, six hundred sixty-nine thousand, nine hundred thirty-seven".