25045571 has 2 divisors, whose sum is σ = 25045572. Its totient is φ = 25045570.

The previous prime is 25045523. The next prime is 25045577. The reversal of 25045571 is 17554052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25045571 - 2²² = 20851267 is a prime.

It is not a weakly prime, because it can be changed into another prime (25045577) 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, 12522785 + 12522786.

It is an arithmetic number, because the mean of its divisors is an integer number (12522786).

Almost surely, 2^25045571 is an apocalyptic number.

25045571 is a deficient number, since it is larger than the sum of its proper divisors (1).

25045571 is an equidigital number, since it uses as much as digits as its factorization.

25045571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 25045571 is about 5004.5550251746. Note that the first 3 decimals coincide. The cubic root of 25045571 is about 292.5793331940.

The spelling of 25045571 in words is "twenty-five million, forty-five thousand, five hundred seventy-one".