70779942025 has 27 divisors (see below), whose sum is σ = 95061003039. Its totient is φ = 52255494720.

The previous prime is 70779941993. The next prime is 70779942041. The reversal of 70779942025 is 52024997707.

The square root of 70779942025 is 266045.

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 68825948409 + 1953993616 = 262347^2 + 44204^2 .

It is not a de Polignac number, because 70779942025 - 2⁵ = 70779941993 is a prime.

It is a super-2 number, since 2×70779942025² (a number of 23 digits) contains 22 as substring.

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, 17290879 + ... + 17294971.

Almost surely, 2^70779942025 is an apocalyptic number.

70779942025 is the 266045-th square number.

70779942025 is the 133023-rd centered octagonal number.

It is an amenable number.

70779942025 is a deficient number, since it is larger than the sum of its proper divisors (24281061014).

70779942025 is an frugal number, since it uses more digits than its factorization.

70779942025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8222 (or 4111 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 52.

The spelling of 70779942025 in words is "seventy billion, seven hundred seventy-nine million, nine hundred forty-two thousand, twenty-five".