25629137 has 2 divisors, whose sum is σ = 25629138. Its totient is φ = 25629136.

The previous prime is 25629091. The next prime is 25629143. The reversal of 25629137 is 73192652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18181696 + 7447441 = 4264^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 25629137 - 2²⁰ = 24580561 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25629097 and 25629106.

It is not a weakly prime, because it can be changed into another prime (25622137) 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, 12814568 + 12814569.

It is an arithmetic number, because the mean of its divisors is an integer number (12814569).

Almost surely, 2^25629137 is an apocalyptic number.

It is an amenable number.

25629137 is a deficient number, since it is larger than the sum of its proper divisors (1).

25629137 is an equidigital number, since it uses as much as digits as its factorization.

25629137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 25629137 is about 5062.5227900722. The cubic root of 25629137 is about 294.8342916906.

The spelling of 25629137 in words is "twenty-five million, six hundred twenty-nine thousand, one hundred thirty-seven".