78011283025 has 27 divisors (see below), whose sum is σ = 104771840211. Its totient is φ = 57594925440.

The previous prime is 78011283001. The next prime is 78011283043. The reversal of 78011283025 is 52038211087.

The square root of 78011283025 is 279305.

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

It can be written as a sum of positive squares in 13 ways, for example, as 71691669009 + 6319614016 = 267753^2 + 79496^2 .

It is not a de Polignac number, because 78011283025 - 2⁹ = 78011282513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18152677 + ... + 18156973.

Almost surely, 2^78011283025 is an apocalyptic number.

78011283025 is the 279305-th square number.

78011283025 is the 139653-rd centered octagonal number.

It is an amenable number.

78011283025 is a deficient number, since it is larger than the sum of its proper divisors (26760557186).

78011283025 is an frugal number, since it uses more digits than its factorization.

78011283025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8630 (or 4315 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 78011283025 in words is "seventy-eight billion, eleven million, two hundred eighty-three thousand, twenty-five".