38277781625 has 32 divisors (see below), whose sum is σ = 49944930048. Its totient is φ = 29233670400.

The previous prime is 38277781571. The next prime is 38277781627. The reversal of 38277781625 is 52618777283.

It is not a de Polignac number, because 38277781625 - 2⁸ = 38277781369 is a prime.

It is a super-2 number, since 2×38277781625² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38277781627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1490897 + ... + 1516353.

It is an arithmetic number, because the mean of its divisors is an integer number (1560779064).

Almost surely, 2^38277781625 is an apocalyptic number.

It is an amenable number.

38277781625 is a deficient number, since it is larger than the sum of its proper divisors (11667148423).

38277781625 is a wasteful number, since it uses less digits than its factorization.

38277781625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26018 (or 26008 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 56.

The spelling of 38277781625 in words is "thirty-eight billion, two hundred seventy-seven million, seven hundred eighty-one thousand, six hundred twenty-five".