1377448625 has 64 divisors (see below), whose sum is σ = 2022299136. Its totient is φ = 917280000.

The previous prime is 1377448621. The next prime is 1377448697. The reversal of 1377448625 is 5268447731.

It is not a de Polignac number, because 1377448625 - 2² = 1377448621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1377448625.

It is not an unprimeable number, because it can be changed into a prime (1377448621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6992027 + ... + 6992223.

It is an arithmetic number, because the mean of its divisors is an integer number (31598424).

Almost surely, 2^1377448625 is an apocalyptic number.

It is an amenable number.

1377448625 is a deficient number, since it is larger than the sum of its proper divisors (644850511).

1377448625 is a wasteful number, since it uses less digits than its factorization.

1377448625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 401 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The square root of 1377448625 is about 37113.9950018857. The cubic root of 1377448625 is about 1112.6497378722.

The spelling of 1377448625 in words is "one billion, three hundred seventy-seven million, four hundred forty-eight thousand, six hundred twenty-five".