7897925511 has 48 divisors (see below), whose sum is σ = 13525324800. Its totient is φ = 4345233984.

The previous prime is 7897925473. The next prime is 7897925513. The reversal of 7897925511 is 1155297987.

7897925511 is a `hidden beast` number, since 7 + 89 + 7 + 9 + 2 + 551 + 1 = 666.

It is not a de Polignac number, because 7897925511 - 2⁷ = 7897925383 is a prime.

It is a super-2 number, since 2×7897925511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7897925513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 664620 + ... + 676398.

It is an arithmetic number, because the mean of its divisors is an integer number (281777600).

Almost surely, 2^7897925511 is an apocalyptic number.

7897925511 is a deficient number, since it is larger than the sum of its proper divisors (5627399289).

7897925511 is a wasteful number, since it uses less digits than its factorization.

7897925511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12188 (or 12185 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 54.

The square root of 7897925511 is about 88870.2734945719. The cubic root of 7897925511 is about 1991.4573561526.

The spelling of 7897925511 in words is "seven billion, eight hundred ninety-seven million, nine hundred twenty-five thousand, five hundred eleven".