25020016 has 40 divisors (see below), whose sum is σ = 55869440. Its totient is φ = 10632384.

The previous prime is 25020001. The next prime is 25020019. The reversal of 25020016 is 61002052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25020019) 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, 13345 + ... + 15103.

It is an arithmetic number, because the mean of its divisors is an integer number (1396736).

Almost surely, 2^25020016 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 25020016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27934720).

25020016 is an abundant number, since it is smaller than the sum of its proper divisors (30849424).

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

25020016 is a wasteful number, since it uses less digits than its factorization.

25020016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 25020016 is about 5002.0011995200. The cubic root of 25020016 is about 292.4797891896.

Adding to 25020016 its reverse (61002052), we get a palindrome (86022068).

The spelling of 25020016 in words is "twenty-five million, twenty thousand, sixteen".