978229793025 has 135 divisors (see below), whose sum is σ = 1875002103513. Its totient is φ = 504180676800.

The previous prime is 978229792933. The next prime is 978229793063. The reversal of 978229793025 is 520397922879.

The square root of 978229793025 is 989055.

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

It can be written as a sum of positive squares in 4 ways, for example, as 270168129729 + 708061663296 = 519777^2 + 841464^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 978229793025 - 2¹⁷ = 978229661953 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, 1379731371 + ... + 1379732079.

Almost surely, 2^978229793025 is an apocalyptic number.

978229793025 is the 989055-th square number.

978229793025 is the 494528-th centered octagonal number.

It is an amenable number.

978229793025 is a deficient number, since it is larger than the sum of its proper divisors (896772310488).

978229793025 is an frugal number, since it uses more digits than its factorization.

978229793025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 63.

The spelling of 978229793025 in words is "nine hundred seventy-eight billion, two hundred twenty-nine million, seven hundred ninety-three thousand, twenty-five".