25683149 has 2 divisors, whose sum is σ = 25683150. Its totient is φ = 25683148.

The previous prime is 25683127. The next prime is 25683167. The reversal of 25683149 is 94138652.

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., 20475625 + 5207524 = 4525^2 + 2282^2 .

It is a cyclic number.

It is not a de Polignac number, because 25683149 - 2¹² = 25679053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25683109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12841574 + 12841575.

It is an arithmetic number, because the mean of its divisors is an integer number (12841575).

Almost surely, 2^25683149 is an apocalyptic number.

It is an amenable number.

25683149 is a deficient number, since it is larger than the sum of its proper divisors (1).

25683149 is an equidigital number, since it uses as much as digits as its factorization.

25683149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 25683149 is about 5067.8544769952. The cubic root of 25683149 is about 295.0412620633.

The spelling of 25683149 in words is "twenty-five million, six hundred eighty-three thousand, one hundred forty-nine".