8513042725 has 24 divisors (see below), whose sum is σ = 11611042560. Its totient is φ = 6191279600.

The previous prime is 8513042687. The next prime is 8513042737. The reversal of 8513042725 is 5272403158.

It is a de Polignac number, because none of the positive numbers 2^k-8513042725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94645 + ... + 161194.

It is an arithmetic number, because the mean of its divisors is an integer number (483793440).

Almost surely, 2^8513042725 is an apocalyptic number.

It is an amenable number.

8513042725 is a deficient number, since it is larger than the sum of its proper divisors (3097999835).

8513042725 is a wasteful number, since it uses less digits than its factorization.

8513042725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255882 (or 255855 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 8513042725 is about 92266.1515670834. The cubic root of 8513042725 is about 2041.8708587853.

The spelling of 8513042725 in words is "eight billion, five hundred thirteen million, forty-two thousand, seven hundred twenty-five".