25615456 has 12 divisors (see below), whose sum is σ = 50430492. Its totient is φ = 12807712.

The previous prime is 25615453. The next prime is 25615493. The reversal of 25615456 is 65451652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25615453) 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 as a sum of consecutive naturals, namely, 400210 + ... + 400273.

It is an arithmetic number, because the mean of its divisors is an integer number (4202541).

Almost surely, 2^25615456 is an apocalyptic number.

It is an amenable number.

25615456 is a deficient number, since it is larger than the sum of its proper divisors (24815036).

25615456 is an equidigital number, since it uses as much as digits as its factorization.

25615456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800493 (or 800485 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 25615456 is about 5061.1714059099. The cubic root of 25615456 is about 294.7818208656.

The spelling of 25615456 in words is "twenty-five million, six hundred fifteen thousand, four hundred fifty-six".