25520827 has 2 divisors, whose sum is σ = 25520828. Its totient is φ = 25520826.

The previous prime is 25520779. The next prime is 25520849. The reversal of 25520827 is 72802552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25520827 - 2⁷ = 25520699 is a prime.

It is a super-2 number, since 2×25520827² = 1302625221527858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25520867) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12760413 + 12760414.

It is an arithmetic number, because the mean of its divisors is an integer number (12760414).

Almost surely, 2^25520827 is an apocalyptic number.

25520827 is a deficient number, since it is larger than the sum of its proper divisors (1).

25520827 is an equidigital number, since it uses as much as digits as its factorization.

25520827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 25520827 is about 5051.8142285718. The cubic root of 25520827 is about 294.4183771499.

The spelling of 25520827 in words is "twenty-five million, five hundred twenty thousand, eight hundred twenty-seven".