25406016 has 56 divisors (see below), whose sum is σ = 67872864. Its totient is φ = 8386560.

The previous prime is 25406011. The next prime is 25406033. The reversal of 25406016 is 61060452.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (25406011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21111 + ... + 22281.

Almost surely, 2^25406016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25406016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33936432).

25406016 is an abundant number, since it is smaller than the sum of its proper divisors (42466848).

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

25406016 is a wasteful number, since it uses less digits than its factorization.

25406016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25406016 is about 5040.4380761993. The cubic root of 25406016 is about 293.9762116900.

Adding to 25406016 its reverse (61060452), we get a palindrome (86466468).

The spelling of 25406016 in words is "twenty-five million, four hundred six thousand, sixteen".