25560016 has 40 divisors (see below), whose sum is σ = 52809120. Its totient is φ = 11949696.

The previous prime is 25560013. The next prime is 25560019. The reversal of 25560016 is 61006552.

It is an interprime number because it is at equal distance from previous prime (25560013) and next prime (25560019).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25560013) 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, 24726 + ... + 25738.

It is an arithmetic number, because the mean of its divisors is an integer number (1320228).

Almost surely, 2^25560016 is an apocalyptic number.

25560016 is the 3198-th centered pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25560016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26404560).

25560016 is an abundant number, since it is smaller than the sum of its proper divisors (27249104).

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

25560016 is a wasteful number, since it uses less digits than its factorization.

25560016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 25560016 is about 5055.6914462811. The cubic root of 25560016 is about 294.5690000253.

Adding to 25560016 its reverse (61006552), we get a palindrome (86566568).

The spelling of 25560016 in words is "twenty-five million, five hundred sixty thousand, sixteen".