25419937 has 2 divisors, whose sum is σ = 25419938. Its totient is φ = 25419936.

The previous prime is 25419893. The next prime is 25419941. The reversal of 25419937 is 73991452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18455616 + 6964321 = 4296^2 + 2639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25419937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25419937.

It is not a weakly prime, because it can be changed into another prime (25419337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12709968 + 12709969.

It is an arithmetic number, because the mean of its divisors is an integer number (12709969).

Almost surely, 2^25419937 is an apocalyptic number.

It is an amenable number.

25419937 is a deficient number, since it is larger than the sum of its proper divisors (1).

25419937 is an equidigital number, since it uses as much as digits as its factorization.

25419937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 25419937 is about 5041.8188186407. The cubic root of 25419937 is about 294.0298957675.

The spelling of 25419937 in words is "twenty-five million, four hundred nineteen thousand, nine hundred thirty-seven".