25425024 has 64 divisors (see below), whose sum is σ = 68535840. Its totient is φ = 8349696.

The previous prime is 25425011. The next prime is 25425041. The reversal of 25425024 is 42052452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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 = 25424985 and 25425003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27579 + ... + 28485.

Almost surely, 2^25425024 is an apocalyptic number.

25425024 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 25425024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34267920).

25425024 is an abundant number, since it is smaller than the sum of its proper divisors (43110816).

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

25425024 is an equidigital number, since it uses as much as digits as its factorization.

25425024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 25425024 is about 5042.3232740474. The cubic root of 25425024 is about 294.0495080678.

Adding to 25425024 its reverse (42052452), we get a palindrome (67477476).

The spelling of 25425024 in words is "twenty-five million, four hundred twenty-five thousand, twenty-four".