61125125 has 8 divisors (see below), whose sum is σ = 76284312. Its totient is φ = 48900000.

The previous prime is 61125083. The next prime is 61125131. The reversal of 61125125 is 52152116.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1387684 + 59737441 = 1178^2 + 7729^2 .

It is not a de Polignac number, because 61125125 - 2⁶ = 61125061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61125125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244376 + ... + 244625.

It is an arithmetic number, because the mean of its divisors is an integer number (9535539).

Almost surely, 2^61125125 is an apocalyptic number.

It is an amenable number.

61125125 is a deficient number, since it is larger than the sum of its proper divisors (15159187).

61125125 is an equidigital number, since it uses as much as digits as its factorization.

61125125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489016 (or 489006 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 61125125 is about 7818.2558796704. The cubic root of 61125125 is about 393.9186897926.

The spelling of 61125125 in words is "sixty-one million, one hundred twenty-five thousand, one hundred twenty-five".