37725782564 has 6 divisors (see below), whose sum is σ = 66020119494. Its totient is φ = 18862891280.

The previous prime is 37725782561. The next prime is 37725782569. The reversal of 37725782564 is 46528752773.

It can be written as a sum of positive squares in only one way, i.e., 20911473664 + 16814308900 = 144608^2 + 129670^2 .

It is not an unprimeable number, because it can be changed into a prime (37725782561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4715722817 + ... + 4715722824.

It is an arithmetic number, because the mean of its divisors is an integer number (11003353249).

Almost surely, 2^37725782564 is an apocalyptic number.

It is an amenable number.

37725782564 is a deficient number, since it is larger than the sum of its proper divisors (28294336930).

37725782564 is a wasteful number, since it uses less digits than its factorization.

37725782564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9431445645 (or 9431445643 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 56.

The spelling of 37725782564 in words is "thirty-seven billion, seven hundred twenty-five million, seven hundred eighty-two thousand, five hundred sixty-four".