25747651 has 2 divisors, whose sum is σ = 25747652. Its totient is φ = 25747650.

The previous prime is 25747637. The next prime is 25747661. The reversal of 25747651 is 15674752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25747651 - 2²¹ = 23650499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25747651.

It is not a weakly prime, because it can be changed into another prime (25747661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12873825 + 12873826.

It is an arithmetic number, because the mean of its divisors is an integer number (12873826).

Almost surely, 2^25747651 is an apocalyptic number.

25747651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25747651 is an equidigital number, since it uses as much as digits as its factorization.

25747651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 37.

The square root of 25747651 is about 5074.2143234199. The cubic root of 25747651 is about 295.2880495849.

The spelling of 25747651 in words is "twenty-five million, seven hundred forty-seven thousand, six hundred fifty-one".