25016424 has 64 divisors (see below), whose sum is σ = 64851840. Its totient is φ = 8037120.

The previous prime is 25016423. The next prime is 25016441. The reversal of 25016424 is 42461052.

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

It is a junction number, because it is equal to n+sod(n) for n = 25016394 and 25016403.

It is not an unprimeable number, because it can be changed into a prime (25016423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90174 + ... + 90450.

It is an arithmetic number, because the mean of its divisors is an integer number (1013310).

Almost surely, 2^25016424 is an apocalyptic number.

25016424 is a gapful number since it is divisible by the number (24) 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 25016424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32425920).

25016424 is an abundant number, since it is smaller than the sum of its proper divisors (39835416).

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

25016424 is a wasteful number, since it uses less digits than its factorization.

25016424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25016424 is about 5001.6421303408. The cubic root of 25016424 is about 292.4657918940.

Adding to 25016424 its reverse (42461052), we get a palindrome (67477476).

The spelling of 25016424 in words is "twenty-five million, sixteen thousand, four hundred twenty-four".