7966455025 has 9 divisors (see below), whose sum is σ = 9878957643. Its totient is φ = 6372807000.

The previous prime is 7966455011. The next prime is 7966455031. The reversal of 7966455025 is 5205546697.

The square root of 7966455025 is 89255.

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., 2867923809 + 5098531216 = 53553^2 + 71404^2 .

It is not a de Polignac number, because 7966455025 - 2¹⁵ = 7966422257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7966455025.

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, 437350 + ... + 455200.

Almost surely, 2^7966455025 is an apocalyptic number.

7966455025 is the 89255-th square number.

7966455025 is the 44628-th centered octagonal number.

It is an amenable number.

7966455025 is a deficient number, since it is larger than the sum of its proper divisors (1912502618).

7966455025 is an frugal number, since it uses more digits than its factorization.

7966455025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35712 (or 17856 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 49.

The cubic root of 7966455025 is about 1997.2006691180.

Multiplying 7966455025 by its sum of digits (49), we get a square (390356296225 = 624785²).

It can be divided in two parts, 79664 and 55025, that added together give a square (134689 = 367²).

The spelling of 7966455025 in words is "seven billion, nine hundred sixty-six million, four hundred fifty-five thousand, twenty-five".