25194047 has 2 divisors, whose sum is σ = 25194048. Its totient is φ = 25194046.

The previous prime is 25194023. The next prime is 25194053. The reversal of 25194047 is 74049152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25194047 - 2¹⁰ = 25193023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25194007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12597023 + 12597024.

It is an arithmetic number, because the mean of its divisors is an integer number (12597024).

Almost surely, 2^25194047 is an apocalyptic number.

25194047 is a deficient number, since it is larger than the sum of its proper divisors (1).

25194047 is an equidigital number, since it uses as much as digits as its factorization.

25194047 is an odious number, because the sum of its binary digits is odd.

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

The square root of 25194047 is about 5019.3671911905. The cubic root of 25194047 is about 293.1563540155.

The spelling of 25194047 in words is "twenty-five million, one hundred ninety-four thousand, forty-seven".