25943428 has 24 divisors (see below), whose sum is σ = 54940032. Its totient is φ = 10464384.

The previous prime is 25943413. The next prime is 25943441. The reversal of 25943428 is 82434952.

It is a happy number.

It is a super-2 number, since 2×25943428² = 1346122912782368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26776 + ... + 27727.

It is an arithmetic number, because the mean of its divisors is an integer number (2289168).

Almost surely, 2^25943428 is an apocalyptic number.

25943428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25943428 is an abundant number, since it is smaller than the sum of its proper divisors (28996604).

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

25943428 is a wasteful number, since it uses less digits than its factorization.

25943428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54531 (or 54529 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 25943428 is about 5093.4691517668. The cubic root of 25943428 is about 296.0345862922.

The spelling of 25943428 in words is "twenty-five million, nine hundred forty-three thousand, four hundred twenty-eight".