25579216 has 40 divisors (see below), whose sum is σ = 55107584. Its totient is φ = 11422080.

The previous prime is 25579207. The next prime is 25579217. The reversal of 25579216 is 61297552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25579217) 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, 4465 + ... + 8431.

Almost surely, 2^25579216 is an apocalyptic number.

25579216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25579216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27553792).

25579216 is an abundant number, since it is smaller than the sum of its proper divisors (29528368).

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

25579216 is a wasteful number, since it uses less digits than its factorization.

25579216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019 (or 4013 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 25579216 is about 5057.5899398824. The cubic root of 25579216 is about 294.6427390147.

The spelling of 25579216 in words is "twenty-five million, five hundred seventy-nine thousand, two hundred sixteen".