25465549 has 2 divisors, whose sum is σ = 25465550. Its totient is φ = 25465548.

The previous prime is 25465547. The next prime is 25465553. The reversal of 25465549 is 94556452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24950025 + 515524 = 4995^2 + 718^2 .

It is a cyclic number.

It is not a de Polignac number, because 25465549 - 2¹ = 25465547 is a prime.

Together with 25465547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25465543) 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, 12732774 + 12732775.

It is an arithmetic number, because the mean of its divisors is an integer number (12732775).

Almost surely, 2^25465549 is an apocalyptic number.

It is an amenable number.

25465549 is a deficient number, since it is larger than the sum of its proper divisors (1).

25465549 is an equidigital number, since it uses as much as digits as its factorization.

25465549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 40.

The square root of 25465549 is about 5046.3401589667. The cubic root of 25465549 is about 294.2056538496.

The spelling of 25465549 in words is "twenty-five million, four hundred sixty-five thousand, five hundred forty-nine".