1078638030625 has 15 divisors (see below), whose sum is σ = 1347898528933. Its totient is φ = 862889653000.

The previous prime is 1078638030593. The next prime is 1078638030629. The reversal of 1078638030625 is 5260308368701.

The square root of 1078638030625 is 1038575.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 84565221601 + 994072809024 = 290801^2 + 997032^2 .

It is not a de Polignac number, because 1078638030625 - 2⁵ = 1078638030593 is a prime.

It is a super-2 number, since 2×1078638030625² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078638030629) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 25943604 + ... + 25985146.

Almost surely, 2^{1078638030625} is an apocalyptic number.

1078638030625 is the 1038575-th square number.

1078638030625 is the 519288-th centered octagonal number.

It is an amenable number.

1078638030625 is a deficient number, since it is larger than the sum of its proper divisors (269260498308).

1078638030625 is an frugal number, since it uses more digits than its factorization.

1078638030625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83106 (or 41548 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

Multiplying 1078638030625 by its sum of digits (49), we get a square (52853263500625 = 7270025²).

The spelling of 1078638030625 in words is "one trillion, seventy-eight billion, six hundred thirty-eight million, thirty thousand, six hundred twenty-five".