25266587 has 2 divisors, whose sum is σ = 25266588. Its totient is φ = 25266586.

The previous prime is 25266551. The next prime is 25266601. The reversal of 25266587 is 78566252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25266587 - 2⁸ = 25266331 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25266517) 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, 12633293 + 12633294.

It is an arithmetic number, because the mean of its divisors is an integer number (12633294).

Almost surely, 2^25266587 is an apocalyptic number.

25266587 is a deficient number, since it is larger than the sum of its proper divisors (1).

25266587 is an equidigital number, since it uses as much as digits as its factorization.

25266587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 41.

The square root of 25266587 is about 5026.5880077842. The cubic root of 25266587 is about 293.4374413807.

The spelling of 25266587 in words is "twenty-five million, two hundred sixty-six thousand, five hundred eighty-seven".