25720432 has 10 divisors (see below), whose sum is σ = 49833368. Its totient is φ = 12860208.

The previous prime is 25720427. The next prime is 25720441. The reversal of 25720432 is 23402752.

It is a junction number, because it is equal to n+sod(n) for n = 25720397 and 25720406.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 803748 + ... + 803779.

Almost surely, 2^25720432 is an apocalyptic number.

It is an amenable number.

25720432 is a deficient number, since it is larger than the sum of its proper divisors (24112936).

25720432 is a wasteful number, since it uses less digits than its factorization.

25720432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607535 (or 1607529 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 25720432 is about 5071.5315241059. The cubic root of 25720432 is about 295.1839588035.

The spelling of 25720432 in words is "twenty-five million, seven hundred twenty thousand, four hundred thirty-two".