25024728 has 32 divisors (see below), whose sum is σ = 64254960. Its totient is φ = 8115840.

The previous prime is 25024721. The next prime is 25024763. The reversal of 25024728 is 82742052.

It is a super-2 number, since 2×25024728² = 1252474022947968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25024695 and 25024704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25024721) 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, 13203 + ... + 14978.

Almost surely, 2^25024728 is an apocalyptic number.

It is an amenable number.

25024728 is an abundant number, since it is smaller than the sum of its proper divisors (39230232).

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

25024728 is a wasteful number, since it uses less digits than its factorization.

25024728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28227 (or 28223 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 25024728 is about 5002.4721888282. The cubic root of 25024728 is about 292.4981488669.

It can be divided in two parts, 25024 and 728, that added together give a palindrome (25752).

The spelling of 25024728 in words is "twenty-five million, twenty-four thousand, seven hundred twenty-eight".