25550663 has 2 divisors, whose sum is σ = 25550664. Its totient is φ = 25550662.

The previous prime is 25550641. The next prime is 25550731. The reversal of 25550663 is 36605552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25550663 - 2⁸ = 25550407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25550963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12775331 + 12775332.

It is an arithmetic number, because the mean of its divisors is an integer number (12775332).

Almost surely, 2^25550663 is an apocalyptic number.

25550663 is a deficient number, since it is larger than the sum of its proper divisors (1).

25550663 is an equidigital number, since it uses as much as digits as its factorization.

25550663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 25550663 is about 5054.7663645316. The cubic root of 25550663 is about 294.5330657758.

The spelling of 25550663 in words is "twenty-five million, five hundred fifty thousand, six hundred sixty-three".