131205444425 has 24 divisors (see below), whose sum is σ = 180394799232. Its totient is φ = 93857832000.

The previous prime is 131205444379. The next prime is 131205444463. The reversal of 131205444425 is 524444502131.

It is a happy number.

It is not a de Polignac number, because 131205444425 - 2⁶ = 131205444361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3893969 + ... + 3927518.

It is an arithmetic number, because the mean of its divisors is an integer number (7516449968).

Almost surely, 2^131205444425 is an apocalyptic number.

It is an amenable number.

131205444425 is a deficient number, since it is larger than the sum of its proper divisors (49189354807).

131205444425 is a wasteful number, since it uses less digits than its factorization.

131205444425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7821569 (or 7821564 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 131205444425 its reverse (524444502131), we get a palindrome (655649946556).

It can be divided in two parts, 13120 and 5444425, that added together give a palindrome (5457545).

The spelling of 131205444425 in words is "one hundred thirty-one billion, two hundred five million, four hundred forty-four thousand, four hundred twenty-five".