25486728 has 32 divisors (see below), whose sum is σ = 64618560. Its totient is φ = 8375360.

The previous prime is 25486711. The next prime is 25486729. The reversal of 25486728 is 82768452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25486728.

It is not an unprimeable number, because it can be changed into a prime (25486729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5775 + ... + 9182.

It is an arithmetic number, because the mean of its divisors is an integer number (2019330).

Almost surely, 2^25486728 is an apocalyptic number.

It is an amenable number.

25486728 is an abundant number, since it is smaller than the sum of its proper divisors (39131832).

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

25486728 is a wasteful number, since it uses less digits than its factorization.

25486728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15037 (or 15033 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 25486728 is about 5048.4381743268. The cubic root of 25486728 is about 294.2871921789.

The spelling of 25486728 in words is "twenty-five million, four hundred eighty-six thousand, seven hundred twenty-eight".