25055761 has 2 divisors, whose sum is σ = 25055762. Its totient is φ = 25055760.

The previous prime is 25055759. The next prime is 25055783. The reversal of 25055761 is 16755052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15171025 + 9884736 = 3895^2 + 3144^2 .

It is a cyclic number.

It is not a de Polignac number, because 25055761 - 2¹ = 25055759 is a prime.

Together with 25055759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25055711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12527880 + 12527881.

It is an arithmetic number, because the mean of its divisors is an integer number (12527881).

Almost surely, 2^25055761 is an apocalyptic number.

It is an amenable number.

25055761 is a deficient number, since it is larger than the sum of its proper divisors (1).

25055761 is an equidigital number, since it uses as much as digits as its factorization.

25055761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 25055761 is about 5005.5729941736. The cubic root of 25055761 is about 292.6190072633.

The spelling of 25055761 in words is "twenty-five million, fifty-five thousand, seven hundred sixty-one".