25744469 has 2 divisors, whose sum is σ = 25744470. Its totient is φ = 25744468.

The previous prime is 25744361. The next prime is 25744471. The reversal of 25744469 is 96444752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15311569 + 10432900 = 3913^2 + 3230^2 .

It is a cyclic number.

It is not a de Polignac number, because 25744469 - 2¹² = 25740373 is a prime.

It is a super-2 number, since 2×25744469² = 1325555368183922, which contains 22 as substring.

Together with 25744471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25744769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12872234 + 12872235.

It is an arithmetic number, because the mean of its divisors is an integer number (12872235).

Almost surely, 2^25744469 is an apocalyptic number.

It is an amenable number.

25744469 is a deficient number, since it is larger than the sum of its proper divisors (1).

25744469 is an equidigital number, since it uses as much as digits as its factorization.

25744469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 41.

The square root of 25744469 is about 5073.9007676540. The cubic root of 25744469 is about 295.2758847822.

It can be divided in two parts, 2574 and 4469, that multiplied together give a triangular number (11503206 = T₄₇₉₆).

The spelling of 25744469 in words is "twenty-five million, seven hundred forty-four thousand, four hundred sixty-nine".