25923949 has 4 divisors (see below), whose sum is σ = 25986240. Its totient is φ = 25861660.

The previous prime is 25923907. The next prime is 25923977. The reversal of 25923949 is 94932952.

It is a happy number.

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 25923949 - 2⁹ = 25923437 is a prime.

It is a super-2 number, since 2×25923949² = 1344102263509202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25920949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30517 + ... + 31354.

It is an arithmetic number, because the mean of its divisors is an integer number (6496560).

Almost surely, 2^25923949 is an apocalyptic number.

It is an amenable number.

25923949 is a deficient number, since it is larger than the sum of its proper divisors (62291).

25923949 is an equidigital number, since it uses as much as digits as its factorization.

25923949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62290.

The product of its digits is 174960, while the sum is 43.

The square root of 25923949 is about 5091.5566382001. The cubic root of 25923949 is about 295.9604775878.

The spelling of 25923949 in words is "twenty-five million, nine hundred twenty-three thousand, nine hundred forty-nine".