25520699 has 2 divisors, whose sum is σ = 25520700. Its totient is φ = 25520698.

The previous prime is 25520683. The next prime is 25520717. The reversal of 25520699 is 99602552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25520699 - 2⁴ = 25520683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25520669) 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, 12760349 + 12760350.

It is an arithmetic number, because the mean of its divisors is an integer number (12760350).

Almost surely, 2^25520699 is an apocalyptic number.

25520699 is a deficient number, since it is larger than the sum of its proper divisors (1).

25520699 is an equidigital number, since it uses as much as digits as its factorization.

25520699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 25520699 is about 5051.8015598398. The cubic root of 25520699 is about 294.4178849295.

The spelling of 25520699 in words is "twenty-five million, five hundred twenty thousand, six hundred ninety-nine".