115520040425 has 12 divisors (see below), whose sum is σ = 143870380620. Its totient is φ = 92012464320.

The previous prime is 115520040421. The next prime is 115520040439. The reversal of 115520040425 is 524040025511.

It can be written as a sum of positive squares in 6 ways, for example, as 37650496 + 115482389929 = 6136^2 + 339827^2 .

It is not a de Polignac number, because 115520040425 - 2² = 115520040421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115520040421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10083362 + ... + 10094811.

It is an arithmetic number, because the mean of its divisors is an integer number (11989198385).

Almost surely, 2^115520040425 is an apocalyptic number.

It is an amenable number.

115520040425 is a deficient number, since it is larger than the sum of its proper divisors (28350340195).

115520040425 is a wasteful number, since it uses less digits than its factorization.

115520040425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20178412 (or 20178407 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 115520040425 its reverse (524040025511), we get a palindrome (639560065936).

The spelling of 115520040425 in words is "one hundred fifteen billion, five hundred twenty million, forty thousand, four hundred twenty-five".