25474849 has 2 divisors, whose sum is σ = 25474850. Its totient is φ = 25474848.

The previous prime is 25474837. The next prime is 25474853. The reversal of 25474849 is 94847452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19642624 + 5832225 = 4432^2 + 2415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25474849 is a prime.

It is not a weakly prime, because it can be changed into another prime (25474879) 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, 12737424 + 12737425.

It is an arithmetic number, because the mean of its divisors is an integer number (12737425).

Almost surely, 2^25474849 is an apocalyptic number.

It is an amenable number.

25474849 is a deficient number, since it is larger than the sum of its proper divisors (1).

25474849 is an equidigital number, since it uses as much as digits as its factorization.

25474849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 43.

The square root of 25474849 is about 5047.2615347335. The cubic root of 25474849 is about 294.2414640544.

It can be divided in two parts, 2547 and 4849, that added together give a square (7396 = 86²).

The spelling of 25474849 in words is "twenty-five million, four hundred seventy-four thousand, eight hundred forty-nine".