25566007 has 2 divisors, whose sum is σ = 25566008. Its totient is φ = 25566006.

The previous prime is 25565971. The next prime is 25566017. The reversal of 25566007 is 70066552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25566007 - 2¹¹ = 25563959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25566007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25566017) 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, 12783003 + 12783004.

It is an arithmetic number, because the mean of its divisors is an integer number (12783004).

Almost surely, 2^25566007 is an apocalyptic number.

25566007 is a deficient number, since it is larger than the sum of its proper divisors (1).

25566007 is an equidigital number, since it uses as much as digits as its factorization.

25566007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 25566007 is about 5056.2839121236. The cubic root of 25566007 is about 294.5920128567.

The spelling of 25566007 in words is "twenty-five million, five hundred sixty-six thousand, seven".