25270720 has 56 divisors (see below), whose sum is σ = 60679584. Its totient is φ = 10023936.

The previous prime is 25270711. The next prime is 25270753. The reversal of 25270720 is 2707252.

It is a zygodrome in base 2.

It is a congruent number.

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, 49989 + ... + 50491.

It is an arithmetic number, because the mean of its divisors is an integer number (1083564).

Almost surely, 2^25270720 is an apocalyptic number.

25270720 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 25270720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30339792).

25270720 is an abundant number, since it is smaller than the sum of its proper divisors (35408864).

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

25270720 is a wasteful number, since it uses less digits than its factorization.

25270720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 25270720 is about 5026.9991048338. Note that the first 3 decimals coincide. The cubic root of 25270720 is about 293.4534402547.

Adding to 25270720 its reverse (2707252), we get a palindrome (27977972).

The spelling of 25270720 in words is "twenty-five million, two hundred seventy thousand, seven hundred twenty".