25427420 has 48 divisors (see below), whose sum is σ = 56222208. Its totient is φ = 9641280.

The previous prime is 25427401. The next prime is 25427429. The reversal of 25427420 is 2472452.

It is a self number, because there is not a number n which added to its sum of digits gives 25427420.

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, 76655 + ... + 76985.

It is an arithmetic number, because the mean of its divisors is an integer number (1171296).

Almost surely, 2^25427420 is an apocalyptic number.

25427420 is a gapful number since it is divisible by the number (20) 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 25427420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28111104).

25427420 is an abundant number, since it is smaller than the sum of its proper divisors (30794788).

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

25427420 is a wasteful number, since it uses less digits than its factorization.

25427420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 25427420 is about 5042.5608573422. The cubic root of 25427420 is about 294.0587446437.

Adding to 25427420 its reverse (2472452), we get a palindrome (27899872).

The spelling of 25427420 in words is "twenty-five million, four hundred twenty-seven thousand, four hundred twenty".