61006140725 has 12 divisors (see below), whose sum is σ = 78256153860. Its totient is φ = 47121984000.

The previous prime is 61006140697. The next prime is 61006140733. The reversal of 61006140725 is 52704160016.

It can be written as a sum of positive squares in 6 ways, for example, as 3370615249 + 57635525476 = 58057^2 + 240074^2 .

It is not a de Polignac number, because 61006140725 - 2⁸ = 61006140469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61006140691 and 61006140700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42072476 + ... + 42073925.

It is an arithmetic number, because the mean of its divisors is an integer number (6521346155).

Almost surely, 2^61006140725 is an apocalyptic number.

It is an amenable number.

61006140725 is a deficient number, since it is larger than the sum of its proper divisors (17250013135).

61006140725 is a wasteful number, since it uses less digits than its factorization.

61006140725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84146440 (or 84146435 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 61006140725 in words is "sixty-one billion, six million, one hundred forty thousand, seven hundred twenty-five".