25432261 has 2 divisors, whose sum is σ = 25432262. Its totient is φ = 25432260.

The previous prime is 25432249. The next prime is 25432291. The reversal of 25432261 is 16223452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18541636 + 6890625 = 4306^2 + 2625^2 .

It is a cyclic number.

It is not a de Polignac number, because 25432261 - 2⁷ = 25432133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25432291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12716130 + 12716131.

It is an arithmetic number, because the mean of its divisors is an integer number (12716131).

Almost surely, 2^25432261 is an apocalyptic number.

It is an amenable number.

25432261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25432261 is an equidigital number, since it uses as much as digits as its factorization.

25432261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 25432261 is about 5043.0408485357. The cubic root of 25432261 is about 294.0774049201.

The spelling of 25432261 in words is "twenty-five million, four hundred thirty-two thousand, two hundred sixty-one".