25238876149 has 2 divisors, whose sum is σ = 25238876150. Its totient is φ = 25238876148.

The previous prime is 25238876093. The next prime is 25238876177. The reversal of 25238876149 is 94167883252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18729291025 + 6509585124 = 136855^2 + 80682^2 .

It is a cyclic number.

It is not a de Polignac number, because 25238876149 - 2²¹ = 25236778997 is a prime.

It is a super-2 number, since 2×25238876149² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25238876149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25238871149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12619438074 + 12619438075.

It is an arithmetic number, because the mean of its divisors is an integer number (12619438075).

Almost surely, 2^25238876149 is an apocalyptic number.

It is an amenable number.

25238876149 is a deficient number, since it is larger than the sum of its proper divisors (1).

25238876149 is an equidigital number, since it uses as much as digits as its factorization.

25238876149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 55.

The spelling of 25238876149 in words is "twenty-five billion, two hundred thirty-eight million, eight hundred seventy-six thousand, one hundred forty-nine".