84073902025 has 9 divisors (see below), whose sum is σ = 104253436263. Its totient is φ = 67257961800.

The previous prime is 84073902019. The next prime is 84073902037. The reversal of 84073902025 is 52020937048.

The square root of 84073902025 is 289955.

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., 30266604729 + 53807297296 = 173973^2 + 231964^2 .

It is not a de Polignac number, because 84073902025 - 2¹¹ = 84073899977 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, 1420780 + ... + 1478770.

Almost surely, 2^84073902025 is an apocalyptic number.

84073902025 is the 289955-th square number.

84073902025 is the 144978-th centered octagonal number.

It is an amenable number.

84073902025 is a deficient number, since it is larger than the sum of its proper divisors (20179534238).

84073902025 is an frugal number, since it uses more digits than its factorization.

84073902025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115992 (or 57996 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 84073902025 in words is "eighty-four billion, seventy-three million, nine hundred two thousand, twenty-five".