25030320 has 160 divisors (see below), whose sum is σ = 90851328. Its totient is φ = 5581824.

The previous prime is 25030289. The next prime is 25030321. The reversal of 25030320 is 2303052.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 25030320.

It is not an unprimeable number, because it can be changed into a prime (25030321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78802 + ... + 79118.

Almost surely, 2^25030320 is an apocalyptic number.

25030320 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 25030320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45425664).

25030320 is an abundant number, since it is smaller than the sum of its proper divisors (65821008).

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

25030320 is a wasteful number, since it uses less digits than its factorization.

25030320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 25030320 is about 5003.0310812546. The cubic root of 25030320 is about 292.5199343562.

Adding to 25030320 its reverse (2303052), we get a palindrome (27333372).

The spelling of 25030320 in words is "twenty-five million, thirty thousand, three hundred twenty".