25628743 has 4 divisors (see below), whose sum is σ = 29290000. Its totient is φ = 21967488.

The previous prime is 25628737. The next prime is 25628761. The reversal of 25628743 is 34782652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25628743 - 2²¹ = 23531591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25628143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830618 + ... + 1830631.

It is an arithmetic number, because the mean of its divisors is an integer number (7322500).

Almost surely, 2^25628743 is an apocalyptic number.

25628743 is a deficient number, since it is larger than the sum of its proper divisors (3661257).

25628743 is an equidigital number, since it uses as much as digits as its factorization.

25628743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661256.

The product of its digits is 80640, while the sum is 37.

The square root of 25628743 is about 5062.4838765175. The cubic root of 25628743 is about 294.8327808411.

The spelling of 25628743 in words is "twenty-five million, six hundred twenty-eight thousand, seven hundred forty-three".