61544125 has 16 divisors (see below), whose sum is σ = 77528880. Its totient is φ = 48772800.

The previous prime is 61544111. The next prime is 61544129. The reversal of 61544125 is 52144516.

It can be written as a sum of positive squares in 8 ways, for example, as 35676729 + 25867396 = 5973^2 + 5086^2 .

It is not a de Polignac number, because 61544125 - 2⁹ = 61543613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61544093 and 61544102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61544129) 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, 11367 + ... + 15883.

It is an arithmetic number, because the mean of its divisors is an integer number (4845555).

Almost surely, 2^61544125 is an apocalyptic number.

It is an amenable number.

61544125 is a deficient number, since it is larger than the sum of its proper divisors (15984755).

61544125 is a wasteful number, since it uses less digits than its factorization.

61544125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641 (or 4631 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 61544125 is about 7845.0063734837. The cubic root of 61544125 is about 394.8167178320.

The spelling of 61544125 in words is "sixty-one million, five hundred forty-four thousand, one hundred twenty-five".