25480261 has 2 divisors, whose sum is σ = 25480262. Its totient is φ = 25480260.

The previous prime is 25480211. The next prime is 25480303. The reversal of 25480261 is 16208452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24940036 + 540225 = 4994^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 25480261 - 2¹⁷ = 25349189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25480211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12740130 + 12740131.

It is an arithmetic number, because the mean of its divisors is an integer number (12740131).

Almost surely, 2^25480261 is an apocalyptic number.

It is an amenable number.

25480261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25480261 is an equidigital number, since it uses as much as digits as its factorization.

25480261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 25480261 is about 5047.7976385747. The cubic root of 25480261 is about 294.2622992717.

The spelling of 25480261 in words is "twenty-five million, four hundred eighty thousand, two hundred sixty-one".