25745641 has 2 divisors, whose sum is σ = 25745642. Its totient is φ = 25745640.

The previous prime is 25745623. The next prime is 25745689. The reversal of 25745641 is 14654752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13987600 + 11758041 = 3740^2 + 3429^2 .

It is a cyclic number.

It is not a de Polignac number, because 25745641 - 2¹³ = 25737449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25745597 and 25745606.

It is not a weakly prime, because it can be changed into another prime (25745611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12872820 + 12872821.

It is an arithmetic number, because the mean of its divisors is an integer number (12872821).

Almost surely, 2^25745641 is an apocalyptic number.

It is an amenable number.

25745641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25745641 is an equidigital number, since it uses as much as digits as its factorization.

25745641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 25745641 is about 5074.0162593354. The cubic root of 25745641 is about 295.2803654610.

The spelling of 25745641 in words is "twenty-five million, seven hundred forty-five thousand, six hundred forty-one".