1881450925 has 18 divisors (see below), whose sum is σ = 2397800958. Its totient is φ = 1464454080.

The previous prime is 1881450917. The next prime is 1881450929. The reversal of 1881450925 is 5290541881.

It can be written as a sum of positive squares in 9 ways, for example, as 26081449 + 1855369476 = 5107^2 + 43074^2 .

It is not a de Polignac number, because 1881450925 - 2³ = 1881450917 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881450929) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6739 + ... + 61711.

Almost surely, 2^1881450925 is an apocalyptic number.

It is an amenable number.

1881450925 is a deficient number, since it is larger than the sum of its proper divisors (516350033).

1881450925 is an equidigital number, since it uses as much as digits as its factorization.

1881450925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55057 (or 55015 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

The square root of 1881450925 is about 43375.6950952950. The cubic root of 1881450925 is about 1234.5185828171.

The spelling of 1881450925 in words is "one billion, eight hundred eighty-one million, four hundred fifty thousand, nine hundred twenty-five".