25695949 has 4 divisors (see below), whose sum is σ = 25791040. Its totient is φ = 25600860.

The previous prime is 25695919. The next prime is 25695953. The reversal of 25695949 is 94959652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25695949 - 2⁹ = 25695437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25695919) 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 in 3 ways as a sum of consecutive naturals, for example, 47139 + ... + 47680.

It is an arithmetic number, because the mean of its divisors is an integer number (6447760).

Almost surely, 2^25695949 is an apocalyptic number.

It is an amenable number.

25695949 is a deficient number, since it is larger than the sum of its proper divisors (95091).

25695949 is an equidigital number, since it uses as much as digits as its factorization.

25695949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95090.

The product of its digits is 874800, while the sum is 49.

The square root of 25695949 is about 5069.1171815218. The cubic root of 25695949 is about 295.0902682676.

The spelling of 25695949 in words is "twenty-five million, six hundred ninety-five thousand, nine hundred forty-nine".