25507272 has 128 divisors (see below), whose sum is σ = 78566400. Its totient is φ = 6739200.

The previous prime is 25507271. The next prime is 25507277. The reversal of 25507272 is 27270552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25507271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194647 + ... + 194777.

It is an arithmetic number, because the mean of its divisors is an integer number (613800).

Almost surely, 2^25507272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25507272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39283200).

25507272 is an abundant number, since it is smaller than the sum of its proper divisors (53059128).

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

25507272 is a wasteful number, since it uses less digits than its factorization.

25507272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 25507272 is about 5050.4724531473. The cubic root of 25507272 is about 294.3662426342.

The spelling of 25507272 in words is "twenty-five million, five hundred seven thousand, two hundred seventy-two".