8621418525 has 24 divisors (see below), whose sum is σ = 14713891584. Its totient is φ = 4449763200.

The previous prime is 8621418523. The next prime is 8621418529. The reversal of 8621418525 is 5258141268.

It is not a de Polignac number, because 8621418525 - 2¹ = 8621418523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8621418521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1851744 + ... + 1856393.

It is an arithmetic number, because the mean of its divisors is an integer number (613078816).

Almost surely, 2^8621418525 is an apocalyptic number.

It is an amenable number.

8621418525 is a deficient number, since it is larger than the sum of its proper divisors (6092473059).

8621418525 is a wasteful number, since it uses less digits than its factorization.

8621418525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708181 (or 3708176 counting only the distinct ones).

The product of its digits is 153600, while the sum is 42.

The square root of 8621418525 is about 92851.5940897086. The cubic root of 8621418525 is about 2050.4990674682.

The spelling of 8621418525 in words is "eight billion, six hundred twenty-one million, four hundred eighteen thousand, five hundred twenty-five".