61283149725 has 96 divisors (see below), whose sum is σ = 118642406400. Its totient is φ = 27900600000.

The previous prime is 61283149723. The next prime is 61283149777. The reversal of 61283149725 is 52794138216.

61283149725 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 61283149725 - 2¹ = 61283149723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61283149721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6452230 + ... + 6461720.

It is an arithmetic number, because the mean of its divisors is an integer number (1235858400).

Almost surely, 2^61283149725 is an apocalyptic number.

It is an amenable number.

61283149725 is a deficient number, since it is larger than the sum of its proper divisors (57359256675).

61283149725 is a wasteful number, since it uses less digits than its factorization.

61283149725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776 (or 9757 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The spelling of 61283149725 in words is "sixty-one billion, two hundred eighty-three million, one hundred forty-nine thousand, seven hundred twenty-five".