7125868985 has 8 divisors (see below), whose sum is σ = 8552793480. Its totient is φ = 5699528064.

The previous prime is 7125868963. The next prime is 7125868987. The reversal of 7125868985 is 5898685217.

It can be written as a sum of positive squares in 4 ways, for example, as 223084096 + 6902784889 = 14936^2 + 83083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7125868985 - 2¹⁶ = 7125803449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7125868987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118562 + ... + 168251.

It is an arithmetic number, because the mean of its divisors is an integer number (1069099185).

Almost surely, 2^7125868985 is an apocalyptic number.

It is an amenable number.

7125868985 is a deficient number, since it is larger than the sum of its proper divisors (1426924495).

7125868985 is a wasteful number, since it uses less digits than its factorization.

7125868985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291787.

The product of its digits is 9676800, while the sum is 59.

The square root of 7125868985 is about 84414.8623466271. The cubic root of 7125868985 is about 1924.3287914584.

The spelling of 7125868985 in words is "seven billion, one hundred twenty-five million, eight hundred sixty-eight thousand, nine hundred eighty-five".