25231449 has 16 divisors (see below), whose sum is σ = 35585600. Its totient is φ = 15857856.

The previous prime is 25231403. The next prime is 25231477. The reversal of 25231449 is 94413252.

It is not a de Polignac number, because 25231449 - 2¹¹ = 25229401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25231499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12087 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (2224100).

Almost surely, 2^25231449 is an apocalyptic number.

It is an amenable number.

25231449 is a deficient number, since it is larger than the sum of its proper divisors (10354151).

25231449 is a wasteful number, since it uses less digits than its factorization.

25231449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184.

The product of its digits is 8640, while the sum is 30.

The square root of 25231449 is about 5023.0915779030. The cubic root of 25231449 is about 293.3013513972.

The spelling of 25231449 in words is "twenty-five million, two hundred thirty-one thousand, four hundred forty-nine".