25789420 has 24 divisors (see below), whose sum is σ = 54268704. Its totient is φ = 10294656.

The previous prime is 25789411. The next prime is 25789453. The reversal of 25789420 is 2498752.

It is a self number, because there is not a number n which added to its sum of digits gives 25789420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11944 + ... + 13936.

It is an arithmetic number, because the mean of its divisors is an integer number (2261196).

Almost surely, 2^25789420 is an apocalyptic number.

25789420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25789420 is an abundant number, since it is smaller than the sum of its proper divisors (28479284).

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

25789420 is a wasteful number, since it uses less digits than its factorization.

25789420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649 (or 2647 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 25789420 is about 5078.3284651547. The cubic root of 25789420 is about 295.4476398458.

The spelling of 25789420 in words is "twenty-five million, seven hundred eighty-nine thousand, four hundred twenty".