91252299225220 has 48 divisors (see below), whose sum is σ = 219012099965568. Its totient is φ = 31285562330880.

The previous prime is 91252299225211. The next prime is 91252299225223. The reversal of 91252299225220 is 2252299225219.

It is a super-2 number, since 2×91252299225220² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91252299225223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5111377 + ... + 14444056.

It is an arithmetic number, because the mean of its divisors is an integer number (4562752082616).

Almost surely, 2^{91252299225220} is an apocalyptic number.

It is an amenable number.

91252299225220 is an abundant number, since it is smaller than the sum of its proper divisors (127759800740348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91252299225220 is a wasteful number, since it uses less digits than its factorization.

91252299225220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19588780 (or 19588778 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 91252299225220 in words is "ninety-one trillion, two hundred fifty-two billion, two hundred ninety-nine million, two hundred twenty-five thousand, two hundred twenty".