25250261 has 2 divisors, whose sum is σ = 25250262. Its totient is φ = 25250260.

The previous prime is 25250257. The next prime is 25250299. The reversal of 25250261 is 16205252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 7187761 = 4250^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 25250261 - 2² = 25250257 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25250231) 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, 12625130 + 12625131.

It is an arithmetic number, because the mean of its divisors is an integer number (12625131).

Almost surely, 2^25250261 is an apocalyptic number.

It is an amenable number.

25250261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25250261 is an equidigital number, since it uses as much as digits as its factorization.

25250261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 25250261 is about 5024.9637809640. The cubic root of 25250261 is about 293.3742262491.

The spelling of 25250261 in words is "twenty-five million, two hundred fifty thousand, two hundred sixty-one".