25330028 has 6 divisors (see below), whose sum is σ = 44327556. Its totient is φ = 12665012.

The previous prime is 25330027. The next prime is 25330043. The reversal of 25330028 is 82003352.

It is a super-2 number, since 2×25330028² = 1283220636961568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25329985 and 25330012.

It is not an unprimeable number, because it can be changed into a prime (25330027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3166250 + ... + 3166257.

It is an arithmetic number, because the mean of its divisors is an integer number (7387926).

Almost surely, 2^25330028 is an apocalyptic number.

It is an amenable number.

25330028 is a deficient number, since it is larger than the sum of its proper divisors (18997528).

25330028 is a wasteful number, since it uses less digits than its factorization.

25330028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332511 (or 6332509 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25330028 is about 5032.8945945648. The cubic root of 25330028 is about 293.6828300923.

The spelling of 25330028 in words is "twenty-five million, three hundred thirty thousand, twenty-eight".