25611457 has 2 divisors, whose sum is σ = 25611458. Its totient is φ = 25611456.

The previous prime is 25611451. The next prime is 25611463. The reversal of 25611457 is 75411652.

It is a balanced prime because it is at equal distance from previous prime (25611451) and next prime (25611463).

It can be written as a sum of positive squares in only one way, i.e., 25240576 + 370881 = 5024^2 + 609^2 .

It is a cyclic number.

It is not a de Polignac number, because 25611457 - 2⁷ = 25611329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25611451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12805728 + 12805729.

It is an arithmetic number, because the mean of its divisors is an integer number (12805729).

Almost surely, 2^25611457 is an apocalyptic number.

It is an amenable number.

25611457 is a deficient number, since it is larger than the sum of its proper divisors (1).

25611457 is an equidigital number, since it uses as much as digits as its factorization.

25611457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 31.

The square root of 25611457 is about 5060.7763238460. The cubic root of 25611457 is about 294.7664799474.

The spelling of 25611457 in words is "twenty-five million, six hundred eleven thousand, four hundred fifty-seven".