25649467 has 2 divisors, whose sum is σ = 25649468. Its totient is φ = 25649466.

The previous prime is 25649461. The next prime is 25649501. The reversal of 25649467 is 76494652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25649467 - 2¹⁵ = 25616699 is a prime.

It is not a weakly prime, because it can be changed into another prime (25649461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12824733 + 12824734.

It is an arithmetic number, because the mean of its divisors is an integer number (12824734).

Almost surely, 2^25649467 is an apocalyptic number.

25649467 is a deficient number, since it is larger than the sum of its proper divisors (1).

25649467 is an equidigital number, since it uses as much as digits as its factorization.

25649467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 25649467 is about 5064.5302842416. The cubic root of 25649467 is about 294.9122289873.

The spelling of 25649467 in words is "twenty-five million, six hundred forty-nine thousand, four hundred sixty-seven".