25378541 has 2 divisors, whose sum is σ = 25378542. Its totient is φ = 25378540.

The previous prime is 25378517. The next prime is 25378571. The reversal of 25378541 is 14587352.

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., 25210441 + 168100 = 5021^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 25378541 - 2⁶ = 25378477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25378571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12689270 + 12689271.

It is an arithmetic number, because the mean of its divisors is an integer number (12689271).

Almost surely, 2^25378541 is an apocalyptic number.

It is an amenable number.

25378541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25378541 is an equidigital number, since it uses as much as digits as its factorization.

25378541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 25378541 is about 5037.7118814001. The cubic root of 25378541 is about 293.8702012375.

The spelling of 25378541 in words is "twenty-five million, three hundred seventy-eight thousand, five hundred forty-one".