25391149 has 16 divisors (see below), whose sum is σ = 32064768. Its totient is φ = 19590912.

The previous prime is 25391147. The next prime is 25391159. The reversal of 25391149 is 94119352.

It is a cyclic number.

It is not a de Polignac number, because 25391149 - 2¹ = 25391147 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 (25391141) 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 15 ways as a sum of consecutive naturals, for example, 1902 + ... + 7375.

It is an arithmetic number, because the mean of its divisors is an integer number (2004048).

Almost surely, 2^25391149 is an apocalyptic number.

It is an amenable number.

25391149 is a deficient number, since it is larger than the sum of its proper divisors (6673619).

25391149 is a wasteful number, since it uses less digits than its factorization.

25391149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9324.

The product of its digits is 9720, while the sum is 34.

The square root of 25391149 is about 5038.9630877791. The cubic root of 25391149 is about 293.9188578579.

The spelling of 25391149 in words is "twenty-five million, three hundred ninety-one thousand, one hundred forty-nine".