225640010131 has 4 divisors (see below), whose sum is σ = 225846830664. Its totient is φ = 225433189600.

The previous prime is 225640010051. The next prime is 225640010149. The reversal of 225640010131 is 131010046522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225640010131 - 2⁹ = 225640009619 is a prime.

It is a super-2 number, since 2×225640010131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225640010096 and 225640010105.

It is not an unprimeable number, because it can be changed into a prime (225640010191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103408630 + ... + 103410811.

It is an arithmetic number, because the mean of its divisors is an integer number (56461707666).

Almost surely, 2^225640010131 is an apocalyptic number.

225640010131 is a deficient number, since it is larger than the sum of its proper divisors (206820533).

225640010131 is a wasteful number, since it uses less digits than its factorization.

225640010131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206820532.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 225640010131 its reverse (131010046522), we get a palindrome (356650056653).

The spelling of 225640010131 in words is "two hundred twenty-five billion, six hundred forty million, ten thousand, one hundred thirty-one".