8465721025 has 12 divisors (see below), whose sum is σ = 10836123904. Its totient is φ = 6554106000.

The previous prime is 8465720983. The next prime is 8465721059. The reversal of 8465721025 is 5201275648.

It is not a de Polignac number, because 8465721025 - 2¹¹ = 8465718977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5460981 + ... + 5462530.

Almost surely, 2^8465721025 is an apocalyptic number.

It is an amenable number.

8465721025 is a deficient number, since it is larger than the sum of its proper divisors (2370402879).

8465721025 is a wasteful number, since it uses less digits than its factorization.

8465721025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923552 (or 10923547 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 8465721025 is about 92009.3529213199. The cubic root of 8465721025 is about 2038.0804242980.

The spelling of 8465721025 in words is "eight billion, four hundred sixty-five million, seven hundred twenty-one thousand, twenty-five".