25416691 has 2 divisors, whose sum is σ = 25416692. Its totient is φ = 25416690.

The previous prime is 25416617. The next prime is 25416697. The reversal of 25416691 is 19661452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25416691 - 2¹⁵ = 25383923 is a prime.

It is not a weakly prime, because it can be changed into another prime (25416697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12708345 + 12708346.

It is an arithmetic number, because the mean of its divisors is an integer number (12708346).

Almost surely, 2^25416691 is an apocalyptic number.

25416691 is a deficient number, since it is larger than the sum of its proper divisors (1).

25416691 is an equidigital number, since it uses as much as digits as its factorization.

25416691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 34.

The square root of 25416691 is about 5041.4969007230. The cubic root of 25416691 is about 294.0173798478.

The spelling of 25416691 in words is "twenty-five million, four hundred sixteen thousand, six hundred ninety-one".