61011695425 has 24 divisors (see below), whose sum is σ = 76835415800. Its totient is φ = 48053191680.

The previous prime is 61011695419. The next prime is 61011695449. The reversal of 61011695425 is 52459611016.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 6047706289 + 54963989136 = 77767^2 + 234444^2 .

It is not a de Polignac number, because 61011695425 - 2¹¹ = 61011693377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 356521 + ... + 499129.

Almost surely, 2^61011695425 is an apocalyptic number.

61011695425 is the 142609-th octagonal number.

It is an amenable number.

61011695425 is a deficient number, since it is larger than the sum of its proper divisors (15823720375).

61011695425 is a wasteful number, since it uses less digits than its factorization.

61011695425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142885 (or 142880 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 61011695425 in words is "sixty-one billion, eleven million, six hundred ninety-five thousand, four hundred twenty-five".