25380437 has 2 divisors, whose sum is σ = 25380438. Its totient is φ = 25380436.

The previous prime is 25380403. The next prime is 25380451. The reversal of 25380437 is 73408352.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23726641 + 1653796 = 4871^2 + 1286^2 .

It is a cyclic number.

It is not a de Polignac number, because 25380437 - 2¹⁰ = 25379413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25380737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12690218 + 12690219.

It is an arithmetic number, because the mean of its divisors is an integer number (12690219).

Almost surely, 2^25380437 is an apocalyptic number.

It is an amenable number.

25380437 is a deficient number, since it is larger than the sum of its proper divisors (1).

25380437 is an equidigital number, since it uses as much as digits as its factorization.

25380437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 25380437 is about 5037.9000585561. The cubic root of 25380437 is about 293.8775192840.

Adding to 25380437 its reverse (73408352), we get a palindrome (98788789).

The spelling of 25380437 in words is "twenty-five million, three hundred eighty thousand, four hundred thirty-seven".