25428004 has 24 divisors (see below), whose sum is σ = 53533760. Its totient is φ = 10323936.

The previous prime is 25428001. The next prime is 25428019. The reversal of 25428004 is 40082452.

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 25428004.

It is not an unprimeable number, because it can be changed into a prime (25428001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23367 + ... + 24430.

Almost surely, 2^25428004 is an apocalyptic number.

It is an amenable number.

25428004 is an abundant number, since it is smaller than the sum of its proper divisors (28105756).

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

25428004 is a wasteful number, since it uses less digits than its factorization.

25428004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47827 (or 47825 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 25428004 is about 5042.6187640947. The cubic root of 25428004 is about 294.0609958748.

The spelling of 25428004 in words is "twenty-five million, four hundred twenty-eight thousand, four".