25745147 has 2 divisors, whose sum is σ = 25745148. Its totient is φ = 25745146.

The previous prime is 25745141. The next prime is 25745173. The reversal of 25745147 is 74154752.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25745147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25745141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12872573 + 12872574.

It is an arithmetic number, because the mean of its divisors is an integer number (12872574).

Almost surely, 2^25745147 is an apocalyptic number.

25745147 is a deficient number, since it is larger than the sum of its proper divisors (1).

25745147 is an equidigital number, since it uses as much as digits as its factorization.

25745147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39200, while the sum is 35.

The square root of 25745147 is about 5073.9675797151. The cubic root of 25745147 is about 295.2784768638.

Adding to 25745147 its reverse (74154752), we get a palindrome (99899899).

It can be divided in two parts, 2574 and 5147, that multiplied together give a triangular number (13248378 = T₅₁₄₇).

The spelling of 25745147 in words is "twenty-five million, seven hundred forty-five thousand, one hundred forty-seven".