385481451827825 has 12 divisors (see below), whose sum is σ = 478030546711500. Its totient is φ = 308363518594560.

The previous prime is 385481451827821. The next prime is 385481451827861. The reversal of 385481451827825 is 528728154184583.

It can be written as a sum of positive squares in 6 ways, for example, as 55244494136896 + 330236957690929 = 7432664^2 + 18172423^2 .

It is not a de Polignac number, because 385481451827825 - 2² = 385481451827821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (385481451827821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 540708344 + ... + 541420793.

It is an arithmetic number, because the mean of its divisors is an integer number (39835878892625).

Almost surely, 2^{385481451827825} is an apocalyptic number.

It is an amenable number.

385481451827825 is a deficient number, since it is larger than the sum of its proper divisors (92549094883675).

385481451827825 is a wasteful number, since it uses less digits than its factorization.

385481451827825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082143396 (or 1082143391 counting only the distinct ones).

The product of its digits is 688128000, while the sum is 71.

The spelling of 385481451827825 in words is "three hundred eighty-five trillion, four hundred eighty-one billion, four hundred fifty-one million, eight hundred twenty-seven thousand, eight hundred twenty-five".