5125749966 has 24 divisors (see below), whose sum is σ = 11690307720. Its totient is φ = 1618657776.

The previous prime is 5125749929. The next prime is 5125750001. The reversal of 5125749966 is 6699475215.

5125749966 is a `hidden beast` number, since 5 + 1 + 2 + 574 + 9 + 9 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7493445 + ... + 7494128.

It is an arithmetic number, because the mean of its divisors is an integer number (487096155).

Almost surely, 2^5125749966 is an apocalyptic number.

5125749966 is an abundant number, since it is smaller than the sum of its proper divisors (6564557754).

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

5125749966 is a wasteful number, since it uses less digits than its factorization.

5125749966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14987600 (or 14987597 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The square root of 5125749966 is about 71594.3431145227. The cubic root of 5125749966 is about 1724.1927151364.

The spelling of 5125749966 in words is "five billion, one hundred twenty-five million, seven hundred forty-nine thousand, nine hundred sixty-six".