113220761525 has 12 divisors (see below), whose sum is σ = 140467192932. Its totient is φ = 90529223040.

The previous prime is 113220761473. The next prime is 113220761527. The reversal of 113220761525 is 525167022311.

It can be written as a sum of positive squares in 6 ways, for example, as 4347819844 + 108872941681 = 65938^2 + 329959^2 .

It is not a de Polignac number, because 113220761525 - 2³⁰ = 112147019701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113220761527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1135874 + ... + 1231523.

It is an arithmetic number, because the mean of its divisors is an integer number (11705599411).

Almost surely, 2^113220761525 is an apocalyptic number.

It is an amenable number.

113220761525 is a deficient number, since it is larger than the sum of its proper divisors (27246431407).

113220761525 is a wasteful number, since it uses less digits than its factorization.

113220761525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369320 (or 2369315 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 113220761525 its reverse (525167022311), we get a palindrome (638387783836).

The spelling of 113220761525 in words is "one hundred thirteen billion, two hundred twenty million, seven hundred sixty-one thousand, five hundred twenty-five".