9725200136 has 8 divisors (see below), whose sum is σ = 18234750270. Its totient is φ = 4862600064.

The previous prime is 9725200091. The next prime is 9725200169. The reversal of 9725200136 is 6310025279.

It can be written as a sum of positive squares in only one way, i.e., 7717622500 + 2007577636 = 87850^2 + 44806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 9725200096 and 9725200105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607825001 + ... + 607825016.

Almost surely, 2^9725200136 is an apocalyptic number.

It is an amenable number.

9725200136 is a deficient number, since it is larger than the sum of its proper divisors (8509550134).

9725200136 is a wasteful number, since it uses less digits than its factorization.

9725200136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215650023 (or 1215650019 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 9725200136 is about 98616.4293411600. The cubic root of 9725200136 is about 2134.5164977440.

The spelling of 9725200136 in words is "nine billion, seven hundred twenty-five million, two hundred thousand, one hundred thirty-six".