25597441 has 2 divisors, whose sum is σ = 25597442. Its totient is φ = 25597440.

The previous prime is 25597423. The next prime is 25597447. The reversal of 25597441 is 14479552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13660416 + 11937025 = 3696^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 25597441 - 2⁵ = 25597409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25597441.

It is not a weakly prime, because it can be changed into another prime (25597447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12798720 + 12798721.

It is an arithmetic number, because the mean of its divisors is an integer number (12798721).

Almost surely, 2^25597441 is an apocalyptic number.

It is an amenable number.

25597441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25597441 is an equidigital number, since it uses as much as digits as its factorization.

25597441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 25597441 is about 5059.3913665578. The cubic root of 25597441 is about 294.7126993175.

It can be divided in two parts, 2559 and 7441, that added together give a 4-th power (10000 = 10⁴).

The spelling of 25597441 in words is "twenty-five million, five hundred ninety-seven thousand, four hundred forty-one".