25345420 has 48 divisors (see below), whose sum is σ = 55792800. Its totient is φ = 9658880.

The previous prime is 25345417. The next prime is 25345451. The reversal of 25345420 is 2454352.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51375 + ... + 51865.

It is an arithmetic number, because the mean of its divisors is an integer number (1162350).

Almost surely, 2^25345420 is an apocalyptic number.

25345420 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 25345420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27896400).

25345420 is an abundant number, since it is smaller than the sum of its proper divisors (30447380).

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

25345420 is a wasteful number, since it uses less digits than its factorization.

25345420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 25345420 is about 5034.4235022493. The cubic root of 25345420 is about 293.7423043102.

Adding to 25345420 its reverse (2454352), we get a palindrome (27799772).

The spelling of 25345420 in words is "twenty-five million, three hundred forty-five thousand, four hundred twenty".