25039428 has 24 divisors (see below), whose sum is σ = 59250240. Its totient is φ = 8228640.

The previous prime is 25039411. The next prime is 25039429. The reversal of 25039428 is 82493052.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25039429) 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 7 ways as a sum of consecutive naturals, for example, 13843 + ... + 15546.

It is an arithmetic number, because the mean of its divisors is an integer number (2468760).

Almost surely, 2^25039428 is an apocalyptic number.

It is an amenable number.

25039428 is an abundant number, since it is smaller than the sum of its proper divisors (34210812).

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

25039428 is a wasteful number, since it uses less digits than its factorization.

25039428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29467 (or 29465 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 25039428 is about 5003.9412466575. The cubic root of 25039428 is about 292.5554106435. Note that the first 3 decimals are identical.

The spelling of 25039428 in words is "twenty-five million, thirty-nine thousand, four hundred twenty-eight".