25852139251 has 8 divisors (see below), whose sum is σ = 26182699200. Its totient is φ = 25521662400.

The previous prime is 25852139249. The next prime is 25852139293. The reversal of 25852139251 is 15293125852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25852139251 - 2¹ = 25852139249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25852139198 and 25852139207.

It is not an unprimeable number, because it can be changed into a prime (25852139851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822045 + ... + 852913.

It is an arithmetic number, because the mean of its divisors is an integer number (3272837400).

Almost surely, 2^25852139251 is an apocalyptic number.

25852139251 is a deficient number, since it is larger than the sum of its proper divisors (330559949).

25852139251 is a wasteful number, since it uses less digits than its factorization.

25852139251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41549.

The product of its digits is 216000, while the sum is 43.

The spelling of 25852139251 in words is "twenty-five billion, eight hundred fifty-two million, one hundred thirty-nine thousand, two hundred fifty-one".