25134779 has 2 divisors, whose sum is σ = 25134780. Its totient is φ = 25134778.

The previous prime is 25134751. The next prime is 25134827. The reversal of 25134779 is 97743152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25134779 - 2⁸ = 25134523 is a prime.

It is not a weakly prime, because it can be changed into another prime (25134679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567389 + 12567390.

It is an arithmetic number, because the mean of its divisors is an integer number (12567390).

Almost surely, 2^25134779 is an apocalyptic number.

25134779 is a deficient number, since it is larger than the sum of its proper divisors (1).

25134779 is an equidigital number, since it uses as much as digits as its factorization.

25134779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 25134779 is about 5013.4597834230. The cubic root of 25134779 is about 292.9262939392.

The spelling of 25134779 in words is "twenty-five million, one hundred thirty-four thousand, seven hundred seventy-nine".