25384646 has 24 divisors (see below), whose sum is σ = 46628280. Its totient is φ = 10305792.

The previous prime is 25384643. The next prime is 25384673. The reversal of 25384646 is 64648352.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25384643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4955 + ... + 8678.

It is an arithmetic number, because the mean of its divisors is an integer number (1942845).

Almost surely, 2^25384646 is an apocalyptic number.

25384646 is a deficient number, since it is larger than the sum of its proper divisors (21243634).

25384646 is a wasteful number, since it uses less digits than its factorization.

25384646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13668 (or 13661 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 25384646 is about 5038.3177748133. The cubic root of 25384646 is about 293.8937635815.

The spelling of 25384646 in words is "twenty-five million, three hundred eighty-four thousand, six hundred forty-six".