1078845755625 has 135 divisors (see below), whose sum is σ = 2142113983009. Its totient is φ = 522661260000.

The previous prime is 1078845755587. The next prime is 1078845755639. The reversal of 1078845755625 is 5265575488701.

It is a happy number.

The square root of 1078845755625 is 1038675.

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

1078845755625 is a `hidden beast` number, since 1 + 0 + 7 + 8 + 8 + 4 + 57 + 556 + 25 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 84581507241 + 994264248384 = 290829^2 + 997128^2 .

It is not a de Polignac number, because 1078845755625 - 2¹⁹ = 1078845231337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 856906246 + ... + 856907504.

Almost surely, 2^{1078845755625} is an apocalyptic number.

1078845755625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1078845755625 is the 1038675-th square number.

1078845755625 is the 519338-th centered octagonal number.

It is an amenable number.

1078845755625 is a deficient number, since it is larger than the sum of its proper divisors (1063268227384).

1078845755625 is an frugal number, since it uses more digits than its factorization.

1078845755625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 94080000, while the sum is 63.

The spelling of 1078845755625 in words is "one trillion, seventy-eight billion, eight hundred forty-five million, seven hundred fifty-five thousand, six hundred twenty-five".