25790641 has 2 divisors, whose sum is σ = 25790642. Its totient is φ = 25790640.

The previous prime is 25790629. The next prime is 25790647. The reversal of 25790641 is 14609752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16000000 + 9790641 = 4000^2 + 3129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25790641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25790597 and 25790606.

It is not a weakly prime, because it can be changed into another prime (25790647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12895320 + 12895321.

It is an arithmetic number, because the mean of its divisors is an integer number (12895321).

Almost surely, 2^25790641 is an apocalyptic number.

It is an amenable number.

25790641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25790641 is an equidigital number, since it uses as much as digits as its factorization.

25790641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 25790641 is about 5078.4486804535. The cubic root of 25790641 is about 295.4523024280.

The spelling of 25790641 in words is "twenty-five million, seven hundred ninety thousand, six hundred forty-one".