1825480581 has 16 divisors (see below), whose sum is σ = 2509754688. Its totient is φ = 1179360000.

The previous prime is 1825480577. The next prime is 1825480607. The reversal of 1825480581 is 1850845281.

It is not a de Polignac number, because 1825480581 - 2² = 1825480577 is a prime.

It is a super-2 number, since 2×1825480581² = 6664758703216195122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825480541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4900 + ... + 60621.

It is an arithmetic number, because the mean of its divisors is an integer number (156859668).

Almost surely, 2^1825480581 is an apocalyptic number.

It is an amenable number.

1825480581 is a deficient number, since it is larger than the sum of its proper divisors (684274107).

1825480581 is a wasteful number, since it uses less digits than its factorization.

1825480581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65812.

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 1825480581 is about 42725.6431314966. The cubic root of 1825480581 is about 1222.1534529869.

The spelling of 1825480581 in words is "one billion, eight hundred twenty-five million, four hundred eighty thousand, five hundred eighty-one".