61783562425 has 24 divisors (see below), whose sum is σ = 82796478464. Its totient is φ = 45463498560.

The previous prime is 61783562413. The next prime is 61783562443. The reversal of 61783562425 is 52426538716.

61783562425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61783562425 - 2⁹ = 61783561913 is a prime.

It is a Duffinian number.

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, 243897 + ... + 427846.

Almost surely, 2^61783562425 is an apocalyptic number.

61783562425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61783562425 is a deficient number, since it is larger than the sum of its proper divisors (21012916039).

61783562425 is a wasteful number, since it uses less digits than its factorization.

61783562425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672049 (or 672044 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 49.

The spelling of 61783562425 in words is "sixty-one billion, seven hundred eighty-three million, five hundred sixty-two thousand, four hundred twenty-five".