91356025 has 12 divisors (see below), whose sum is σ = 114648912. Its totient is φ = 72202640.

The previous prime is 91355993. The next prime is 91356029. The reversal of 91356025 is 52065319.

It is not a de Polignac number, because 91356025 - 2⁵ = 91355993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91356029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19939 + ... + 24088.

It is an arithmetic number, because the mean of its divisors is an integer number (9554076).

Almost surely, 2^91356025 is an apocalyptic number.

It is an amenable number.

91356025 is a deficient number, since it is larger than the sum of its proper divisors (23292887).

91356025 is a wasteful number, since it uses less digits than its factorization.

91356025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44120 (or 44115 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 91356025 is about 9558.0345783011. The cubic root of 91356025 is about 450.3799671421.

The spelling of 91356025 in words is "ninety-one million, three hundred fifty-six thousand, twenty-five".