25427424 has 96 divisors (see below), whose sum is σ = 73785600. Its totient is φ = 7666560.

The previous prime is 25427401. The next prime is 25427429. The reversal of 25427424 is 42472452.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 25427391 and 25427400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25427429) 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, 127677 + ... + 127875.

It is an arithmetic number, because the mean of its divisors is an integer number (768600).

Almost surely, 2^25427424 is an apocalyptic number.

25427424 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 25427424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36892800).

25427424 is an abundant number, since it is smaller than the sum of its proper divisors (48358176).

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

25427424 is a wasteful number, since it uses less digits than its factorization.

25427424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 215 counting only the distinct ones).

The product of its digits is 17920, while the sum is 30.

The square root of 25427424 is about 5042.5612539661. The cubic root of 25427424 is about 294.0587600632.

Adding to 25427424 its reverse (42472452), we get a palindrome (67899876).

It can be divided in two parts, 254 and 27424, that multiplied together give a palindrome (6965696).

The spelling of 25427424 in words is "twenty-five million, four hundred twenty-seven thousand, four hundred twenty-four".