61313740725 has 24 divisors (see below), whose sum is σ = 103528909440. Its totient is φ = 32004901120.

The previous prime is 61313740717. The next prime is 61313740729. The reversal of 61313740725 is 52704731316.

It is not a de Polignac number, because 61313740725 - 2³ = 61313740717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61313740729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8693460 + ... + 8700509.

It is an arithmetic number, because the mean of its divisors is an integer number (4313704560).

Almost surely, 2^61313740725 is an apocalyptic number.

It is an amenable number.

61313740725 is a deficient number, since it is larger than the sum of its proper divisors (42215168715).

61313740725 is a wasteful number, since it uses less digits than its factorization.

61313740725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17394029 (or 17394024 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The spelling of 61313740725 in words is "sixty-one billion, three hundred thirteen million, seven hundred forty thousand, seven hundred twenty-five".