381100881725 has 24 divisors (see below), whose sum is σ = 500422513320. Its totient is φ = 286912440320.

The previous prime is 381100881713. The next prime is 381100881727. The reversal of 381100881725 is 527188001183.

It can be written as a sum of positive squares in 12 ways, for example, as 222578255524 + 158522626201 = 471782^2 + 398149^2 .

It is not a de Polignac number, because 381100881725 - 2¹⁰ = 381100880701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381100881727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3865139 + ... + 3962511.

It is an arithmetic number, because the mean of its divisors is an integer number (20850938055).

Almost surely, 2^381100881725 is an apocalyptic number.

It is an amenable number.

381100881725 is a deficient number, since it is larger than the sum of its proper divisors (119321631595).

381100881725 is a wasteful number, since it uses less digits than its factorization.

381100881725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106609 (or 106604 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 44.

The spelling of 381100881725 in words is "three hundred eighty-one billion, one hundred million, eight hundred eighty-one thousand, seven hundred twenty-five".