25255120 has 60 divisors (see below), whose sum is σ = 64566180. Its totient is φ = 9180160.

The previous prime is 25255099. The next prime is 25255129. The reversal of 25255120 is 2155252.

It can be written as a sum of positive squares in 2 ways, for example, as 10601536 + 14653584 = 3256^2 + 3828^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 25255091 and 25255100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8376 + ... + 10984.

It is an arithmetic number, because the mean of its divisors is an integer number (1076103).

Almost surely, 2^25255120 is an apocalyptic number.

25255120 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 25255120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32283090).

25255120 is an abundant number, since it is smaller than the sum of its proper divisors (39311060).

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

25255120 is a wasteful number, since it uses less digits than its factorization.

25255120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644 (or 2627 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 25255120 is about 5025.4472437784. The cubic root of 25255120 is about 293.3930434003.

The spelling of 25255120 in words is "twenty-five million, two hundred fifty-five thousand, one hundred twenty".