5125668778 has 16 divisors (see below), whose sum is σ = 7928953920. Its totient is φ = 2483908000.

The previous prime is 5125668733. The next prime is 5125668799. The reversal of 5125668778 is 8778665215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297523 + ... + 314278.

It is an arithmetic number, because the mean of its divisors is an integer number (495559620).

Almost surely, 2^5125668778 is an apocalyptic number.

5125668778 is a deficient number, since it is larger than the sum of its proper divisors (2803285142).

5125668778 is a wasteful number, since it uses less digits than its factorization.

5125668778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611933.

The product of its digits is 5644800, while the sum is 55.

The square root of 5125668778 is about 71593.7761121733. The cubic root of 5125668778 is about 1724.1836117857.

The spelling of 5125668778 in words is "five billion, one hundred twenty-five million, six hundred sixty-eight thousand, seven hundred seventy-eight".