6998159025 has 225 divisors, whose sum is σ = 15435938903. Its totient is φ = 3132043200.

The previous prime is 6998158967. The next prime is 6998159057. The reversal of 6998159025 is 5209518996.

The square root of 6998159025 is 83655.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 6866276769 + 131882256 = 82863^2 + 11484^2 .

It is a tau number, because it is divible by the number of its divisors (225).

It is not a de Polignac number, because 6998159025 - 2⁷ = 6998158897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 224 ways as a sum of consecutive naturals, for example, 538319919 + ... + 538319931.

Almost surely, 2^6998159025 is an apocalyptic number.

6998159025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6998159025 is the 83655-th square number.

6998159025 is the 41828-th centered octagonal number.

It is an amenable number.

6998159025 is an abundant number, since it is smaller than the sum of its proper divisors (8437779878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6998159025 is an equidigital number, since it uses as much as digits as its factorization.

6998159025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 32 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The cubic root of 6998159025 is about 1912.7634700459.

The spelling of 6998159025 in words is "six billion, nine hundred ninety-eight million, one hundred fifty-nine thousand, twenty-five".