997225092 has 36 divisors (see below), whose sum is σ = 2523511536. Its totient is φ = 332046000.

The previous prime is 997225069. The next prime is 997225093. The reversal of 997225092 is 290522799.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×997225092² = 1988915768228816928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (997225093) 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, 19467 + ... + 48717.

Almost surely, 2^997225092 is an apocalyptic number.

It is an amenable number.

997225092 is an abundant number, since it is smaller than the sum of its proper divisors (1526286444).

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

997225092 is a wasteful number, since it uses less digits than its factorization.

997225092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30208 (or 30203 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 997225092 is about 31578.8709741181. The cubic root of 997225092 is about 999.0741737770.

The spelling of 997225092 in words is "nine hundred ninety-seven million, two hundred twenty-five thousand, ninety-two".