25484644 has 12 divisors (see below), whose sum is σ = 46537344. Its totient is φ = 12188264.

The previous prime is 25484633. The next prime is 25484647. The reversal of 25484644 is 44648452.

It is a happy number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (25484647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138412 + ... + 138595.

It is an arithmetic number, because the mean of its divisors is an integer number (3878112).

Almost surely, 2^25484644 is an apocalyptic number.

It is an amenable number.

25484644 is a deficient number, since it is larger than the sum of its proper divisors (21052700).

25484644 is a wasteful number, since it uses less digits than its factorization.

25484644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277034 (or 277032 counting only the distinct ones).

The product of its digits is 122880, while the sum is 37.

The square root of 25484644 is about 5048.2317696397. The cubic root of 25484644 is about 294.2791708638.

The spelling of 25484644 in words is "twenty-five million, four hundred eighty-four thousand, six hundred forty-four".