78767229025 has 9 divisors (see below), whose sum is σ = 97673104083. Its totient is φ = 63012660600.

The previous prime is 78767229011. The next prime is 78767229031. The reversal of 78767229025 is 52092276787.

It is a happy number.

The square root of 78767229025 is 280655.

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

It can be written as a sum of positive squares in only one way, i.e., 28356202449 + 50411026576 = 168393^2 + 224524^2 .

It is not a de Polignac number, because 78767229025 - 2¹⁵ = 78767196257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1375210 + ... + 1431340.

Almost surely, 2^78767229025 is an apocalyptic number.

78767229025 is the 280655-th square number.

78767229025 is the 140328-th centered octagonal number.

It is an amenable number.

78767229025 is a deficient number, since it is larger than the sum of its proper divisors (18905875058).

78767229025 is an frugal number, since it uses more digits than its factorization.

78767229025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112272 (or 56136 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 78767229025 in words is "seventy-eight billion, seven hundred sixty-seven million, two hundred twenty-nine thousand, twenty-five".