25304261 has 2 divisors, whose sum is σ = 25304262. Its totient is φ = 25304260.

The previous prime is 25304249. The next prime is 25304287. The reversal of 25304261 is 16240352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17430625 + 7873636 = 4175^2 + 2806^2 .

It is a cyclic number.

It is not a de Polignac number, because 25304261 - 2⁶ = 25304197 is a prime.

It is a super-2 number, since 2×25304261² = 1280611249512242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25304221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12652130 + 12652131.

It is an arithmetic number, because the mean of its divisors is an integer number (12652131).

Almost surely, 2^25304261 is an apocalyptic number.

It is an amenable number.

25304261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25304261 is an equidigital number, since it uses as much as digits as its factorization.

25304261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25304261 is about 5030.3340843328. The cubic root of 25304261 is about 293.5832132411.

The spelling of 25304261 in words is "twenty-five million, three hundred four thousand, two hundred sixty-one".