91072425 has 12 divisors (see below), whose sum is σ = 150573200. Its totient is φ = 48571920.

The previous prime is 91072411. The next prime is 91072447. The reversal of 91072425 is 52427019.

It is not a de Polignac number, because 91072425 - 2⁷ = 91072297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91072392 and 91072401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607075 + ... + 607224.

Almost surely, 2^91072425 is an apocalyptic number.

It is an amenable number.

91072425 is a deficient number, since it is larger than the sum of its proper divisors (59500775).

91072425 is a wasteful number, since it uses less digits than its factorization.

91072425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214312 (or 1214307 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 91072425 is about 9543.1873606254. The cubic root of 91072425 is about 449.9134401409.

The spelling of 91072425 in words is "ninety-one million, seventy-two thousand, four hundred twenty-five".