25481983 has 8 divisors (see below), whose sum is σ = 26966000. Its totient is φ = 24012288.

The previous prime is 25481977. The next prime is 25482049. The reversal of 25481983 is 38918452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25481983 is a prime.

It is a super-2 number, since 2×25481983² = 1298662915224578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193 + ... + 7141.

It is an arithmetic number, because the mean of its divisors is an integer number (3370750).

Almost surely, 2^25481983 is an apocalyptic number.

25481983 is a deficient number, since it is larger than the sum of its proper divisors (1484017).

25481983 is a wasteful number, since it uses less digits than its factorization.

25481983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7161.

The product of its digits is 69120, while the sum is 40.

The square root of 25481983 is about 5047.9682051297. The cubic root of 25481983 is about 294.2689280404.

The spelling of 25481983 in words is "twenty-five million, four hundred eighty-one thousand, nine hundred eighty-three".