904125473981 has 2 divisors, whose sum is σ = 904125473982. Its totient is φ = 904125473980.

The previous prime is 904125473963. The next prime is 904125474019. The reversal of 904125473981 is 189374521409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748995048025 + 155130425956 = 865445^2 + 393866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-904125473981 is a prime.

It is a super-2 number, since 2×904125473981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (904125473281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452062736990 + 452062736991.

It is an arithmetic number, because the mean of its divisors is an integer number (452062736991).

Almost surely, 2^904125473981 is an apocalyptic number.

It is an amenable number.

904125473981 is a deficient number, since it is larger than the sum of its proper divisors (1).

904125473981 is an equidigital number, since it uses as much as digits as its factorization.

904125473981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 904125473981 in words is "nine hundred four billion, one hundred twenty-five million, four hundred seventy-three thousand, nine hundred eighty-one".