25628736 has 56 divisors (see below), whose sum is σ = 77500480. Its totient is φ = 7322112.

The previous prime is 25628719. The next prime is 25628737. The reversal of 25628736 is 63782652.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 25628694 and 25628703.

It is not an unprimeable number, because it can be changed into a prime (25628737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8191 + ... + 10878.

Almost surely, 2^25628736 is an apocalyptic number.

It is an amenable number.

25628736 is an abundant number, since it is smaller than the sum of its proper divisors (51871744).

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

25628736 is a wasteful number, since it uses less digits than its factorization.

25628736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19091 (or 19081 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 25628736 is about 5062.4831851573. The cubic root of 25628736 is about 294.8327539984.

The spelling of 25628736 in words is "twenty-five million, six hundred twenty-eight thousand, seven hundred thirty-six".