25137943 has 2 divisors, whose sum is σ = 25137944. Its totient is φ = 25137942.

The previous prime is 25137923. The next prime is 25137947. The reversal of 25137943 is 34973152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25137943 - 2¹³ = 25129751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25137899 and 25137908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25137947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12568971 + 12568972.

It is an arithmetic number, because the mean of its divisors is an integer number (12568972).

Almost surely, 2^25137943 is an apocalyptic number.

25137943 is a deficient number, since it is larger than the sum of its proper divisors (1).

25137943 is an equidigital number, since it uses as much as digits as its factorization.

25137943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 25137943 is about 5013.7753240447. The cubic root of 25137943 is about 292.9385847429.

The spelling of 25137943 in words is "twenty-five million, one hundred thirty-seven thousand, nine hundred forty-three".