61955955425 has 48 divisors (see below), whose sum is σ = 94914758400. Its totient is φ = 39066589440.

The previous prime is 61955955367. The next prime is 61955955437. The reversal of 61955955425 is 52455955916.

It is not a de Polignac number, because 61955955425 - 2¹² = 61955951329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 546551 + ... + 650099.

It is an arithmetic number, because the mean of its divisors is an integer number (1977390800).

Almost surely, 2^61955955425 is an apocalyptic number.

61955955425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61955955425 is a deficient number, since it is larger than the sum of its proper divisors (32958802975).

61955955425 is a wasteful number, since it uses less digits than its factorization.

61955955425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103842 (or 103837 counting only the distinct ones).

The product of its digits is 12150000, while the sum is 56.

The spelling of 61955955425 in words is "sixty-one billion, nine hundred fifty-five million, nine hundred fifty-five thousand, four hundred twenty-five".