25940417 has 2 divisors, whose sum is σ = 25940418. Its totient is φ = 25940416.

The previous prime is 25940407. The next prime is 25940423. The reversal of 25940417 is 71404952.

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., 25361296 + 579121 = 5036^2 + 761^2 .

It is a cyclic number.

It is not a de Polignac number, because 25940417 - 2⁴ = 25940401 is a prime.

It is not a weakly prime, because it can be changed into another prime (25940407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12970208 + 12970209.

It is an arithmetic number, because the mean of its divisors is an integer number (12970209).

Almost surely, 2^25940417 is an apocalyptic number.

It is an amenable number.

25940417 is a deficient number, since it is larger than the sum of its proper divisors (1).

25940417 is an equidigital number, since it uses as much as digits as its factorization.

25940417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 25940417 is about 5093.1735686112. The cubic root of 25940417 is about 296.0231332359.

The spelling of 25940417 in words is "twenty-five million, nine hundred forty thousand, four hundred seventeen".