91058972425 has 6 divisors (see below), whose sum is σ = 112913125838. Its totient is φ = 72847177920.

The previous prime is 91058972413. The next prime is 91058972449. The reversal of 91058972425 is 52427985019.

It can be written as a sum of positive squares in 3 ways, for example, as 3376655881 + 87682316544 = 58109^2 + 296112^2 .

It is not a de Polignac number, because 91058972425 - 2⁵ = 91058972393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1821179424 + ... + 1821179473.

Almost surely, 2^91058972425 is an apocalyptic number.

It is an amenable number.

91058972425 is a deficient number, since it is larger than the sum of its proper divisors (21854153413).

91058972425 is a wasteful number, since it uses less digits than its factorization.

91058972425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642358907 (or 3642358902 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 91058972425 in words is "ninety-one billion, fifty-eight million, nine hundred seventy-two thousand, four hundred twenty-five".