25746401 has 4 divisors (see below), whose sum is σ = 26374404. Its totient is φ = 25118400.

The previous prime is 25746397. The next prime is 25746437. The reversal of 25746401 is 10464752.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5180176 + 20566225 = 2276^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 25746401 - 2² = 25746397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25746451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313940 + ... + 314021.

It is an arithmetic number, because the mean of its divisors is an integer number (6593601).

Almost surely, 2^25746401 is an apocalyptic number.

It is an amenable number.

25746401 is a deficient number, since it is larger than the sum of its proper divisors (628003).

25746401 is an equidigital number, since it uses as much as digits as its factorization.

25746401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628002.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 25746401 is about 5074.0911501470. The cubic root of 25746401 is about 295.2832709479.

The spelling of 25746401 in words is "twenty-five million, seven hundred forty-six thousand, four hundred one".