25389461 has 2 divisors, whose sum is σ = 25389462. Its totient is φ = 25389460.

The previous prime is 25389457. The next prime is 25389487. The reversal of 25389461 is 16498352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17380561 + 8008900 = 4169^2 + 2830^2 .

It is a cyclic number.

It is not a de Polignac number, because 25389461 - 2² = 25389457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25389421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694730 + 12694731.

It is an arithmetic number, because the mean of its divisors is an integer number (12694731).

Almost surely, 2^25389461 is an apocalyptic number.

It is an amenable number.

25389461 is a deficient number, since it is larger than the sum of its proper divisors (1).

25389461 is an equidigital number, since it uses as much as digits as its factorization.

25389461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 25389461 is about 5038.7955902180. The cubic root of 25389461 is about 293.9123444855.

The spelling of 25389461 in words is "twenty-five million, three hundred eighty-nine thousand, four hundred sixty-one".