61522112125 has 16 divisors (see below), whose sum is σ = 76917527856. Its totient is φ = 49129272000.

The previous prime is 61522112111. The next prime is 61522112131. The reversal of 61522112125 is 52121122516.

It can be written as a sum of positive squares in 8 ways, for example, as 50239636164 + 11282475961 = 224142^2 + 106219^2 .

It is not a de Polignac number, because 61522112125 - 2¹⁵ = 61522079357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61522112093 and 61522112102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372186 + ... + 511435.

It is an arithmetic number, because the mean of its divisors is an integer number (4807345491).

Almost surely, 2^61522112125 is an apocalyptic number.

It is an amenable number.

61522112125 is a deficient number, since it is larger than the sum of its proper divisors (15395415731).

61522112125 is an equidigital number, since it uses as much as digits as its factorization.

61522112125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884193 (or 884183 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The spelling of 61522112125 in words is "sixty-one billion, five hundred twenty-two million, one hundred twelve thousand, one hundred twenty-five".