25480644 has 24 divisors (see below), whose sum is σ = 67948608. Its totient is φ = 7280160.

The previous prime is 25480643. The next prime is 25480657. The reversal of 25480644 is 44608452.

It is not an unprimeable number, because it can be changed into a prime (25480643) 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 7 ways as a sum of consecutive naturals, for example, 151587 + ... + 151754.

It is an arithmetic number, because the mean of its divisors is an integer number (2831192).

Almost surely, 2^25480644 is an apocalyptic number.

It is an amenable number.

25480644 is an abundant number, since it is smaller than the sum of its proper divisors (42467964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25480644 is a wasteful number, since it uses less digits than its factorization.

25480644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303355 (or 303353 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 25480644 is about 5047.8355757691. The cubic root of 25480644 is about 294.2637736404.

The spelling of 25480644 in words is "twenty-five million, four hundred eighty thousand, six hundred forty-four".