25625191 has 2 divisors, whose sum is σ = 25625192. Its totient is φ = 25625190.

The previous prime is 25625179. The next prime is 25625203. The reversal of 25625191 is 19152652.

It is a balanced prime because it is at equal distance from previous prime (25625179) and next prime (25625203).

It is a cyclic number.

It is not a de Polignac number, because 25625191 - 2¹⁵ = 25592423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25625101) 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, 12812595 + 12812596.

It is an arithmetic number, because the mean of its divisors is an integer number (12812596).

Almost surely, 2^25625191 is an apocalyptic number.

25625191 is a deficient number, since it is larger than the sum of its proper divisors (1).

25625191 is an equidigital number, since it uses as much as digits as its factorization.

25625191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 31.

The square root of 25625191 is about 5062.1330484293. The cubic root of 25625191 is about 294.8191594887.

The spelling of 25625191 in words is "twenty-five million, six hundred twenty-five thousand, one hundred ninety-one".