25010131421 has 6 divisors (see below), whose sum is σ = 27490475166. Its totient is φ = 22736483000.

The previous prime is 25010131397. The next prime is 25010131429. The reversal of 25010131421 is 12413101052.

It can be written as a sum of positive squares in only one way, i.e., 13327548025 + 11682583396 = 115445^2 + 108086^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25010131421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25010131393 and 25010131402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25010131429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103347530 + ... + 103347771.

It is an arithmetic number, because the mean of its divisors is an integer number (4581745861).

Almost surely, 2^25010131421 is an apocalyptic number.

It is an amenable number.

25010131421 is a deficient number, since it is larger than the sum of its proper divisors (2480343745).

25010131421 is a wasteful number, since it uses less digits than its factorization.

25010131421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206695323 (or 206695312 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 25010131421 its reverse (12413101052), we get a palindrome (37423232473).

The spelling of 25010131421 in words is "twenty-five billion, ten million, one hundred thirty-one thousand, four hundred twenty-one".