225276572177661 has 16 divisors (see below), whose sum is σ = 304600149399168. Its totient is φ = 148068699878400.

The previous prime is 225276572177653. The next prime is 225276572177669. The reversal of 225276572177661 is 166771275672522.

It is an interprime number because it is at equal distance from previous prime (225276572177653) and next prime (225276572177669).

It is not a de Polignac number, because 225276572177661 - 2³ = 225276572177653 is a prime.

It is a super-2 number, since 2×225276572177661² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225276572177592 and 225276572177601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225276572177669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89059821 + ... + 91554381.

It is an arithmetic number, because the mean of its divisors is an integer number (19037509337448).

Almost surely, 2^{225276572177661} is an apocalyptic number.

It is an amenable number.

225276572177661 is a deficient number, since it is larger than the sum of its proper divisors (79323577221507).

225276572177661 is a wasteful number, since it uses less digits than its factorization.

225276572177661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918612.

The product of its digits is 207446400, while the sum is 66.

The spelling of 225276572177661 in words is "two hundred twenty-five trillion, two hundred seventy-six billion, five hundred seventy-two million, one hundred seventy-seven thousand, six hundred sixty-one".