61656125 has 8 divisors (see below), whose sum is σ = 76947000. Its totient is φ = 49324800.

The previous prime is 61656107. The next prime is 61656131. The reversal of 61656125 is 52165616.

It can be written as a sum of positive squares in 4 ways, for example, as 597529 + 61058596 = 773^2 + 7814^2 .

It is not a de Polignac number, because 61656125 - 2¹⁰ = 61655101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 61656091 and 61656100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246500 + ... + 246749.

It is an arithmetic number, because the mean of its divisors is an integer number (9618375).

Almost surely, 2^61656125 is an apocalyptic number.

It is an amenable number.

61656125 is a deficient number, since it is larger than the sum of its proper divisors (15290875).

61656125 is an equidigital number, since it uses as much as digits as its factorization.

61656125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493264 (or 493254 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 61656125 is about 7852.1414276616. The cubic root of 61656125 is about 395.0560727960.

The spelling of 61656125 in words is "sixty-one million, six hundred fifty-six thousand, one hundred twenty-five".