25206081337 has 2 divisors, whose sum is σ = 25206081338. Its totient is φ = 25206081336.

The previous prime is 25206081331. The next prime is 25206081361. The reversal of 25206081337 is 73318060252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25159035456 + 47045881 = 158616^2 + 6859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25206081337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25206081296 and 25206081305.

It is not a weakly prime, because it can be changed into another prime (25206081331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12603040668 + 12603040669.

It is an arithmetic number, because the mean of its divisors is an integer number (12603040669).

Almost surely, 2^25206081337 is an apocalyptic number.

It is an amenable number.

25206081337 is a deficient number, since it is larger than the sum of its proper divisors (1).

25206081337 is an equidigital number, since it uses as much as digits as its factorization.

25206081337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 25206081337 in words is "twenty-five billion, two hundred six million, eighty-one thousand, three hundred thirty-seven".