25097144 has 8 divisors (see below), whose sum is σ = 47057160. Its totient is φ = 12548568.

The previous prime is 25097131. The next prime is 25097147. The reversal of 25097144 is 44179052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 25097144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25097147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1568564 + ... + 1568579.

It is an arithmetic number, because the mean of its divisors is an integer number (5882145).

Almost surely, 2^25097144 is an apocalyptic number.

It is an amenable number.

25097144 is a deficient number, since it is larger than the sum of its proper divisors (21960016).

25097144 is a wasteful number, since it uses less digits than its factorization.

25097144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137149 (or 3137145 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 25097144 is about 5009.7049813337. The cubic root of 25097144 is about 292.7800186928.

The spelling of 25097144 in words is "twenty-five million, ninety-seven thousand, one hundred forty-four".