9203730075225 has 135 divisors (see below), whose sum is σ = 19833975903951. Its totient is φ = 4206982600800.

The previous prime is 9203730075203. The next prime is 9203730075229. The reversal of 9203730075225 is 5225700373029.

The square root of 9203730075225 is 3033765.

It is a perfect power (a square), and thus also a powerful number.

9203730075225 is a `hidden beast` number, since 9 + 20 + 37 + 300 + 75 + 225 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3313342827081 + 5890387248144 = 1820259^2 + 2427012^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 9203730075225 - 2⁹ = 9203730074713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9203730075229) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 955631160 + ... + 955640790.

Almost surely, 2^{9203730075225} is an apocalyptic number.

9203730075225 is the 3033765-th square number.

9203730075225 is the 1516883-rd centered octagonal number.

It is an amenable number.

9203730075225 is an abundant number, since it is smaller than the sum of its proper divisors (10630245828726).

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

9203730075225 is an frugal number, since it uses more digits than its factorization.

9203730075225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19298 (or 9646 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 45.

The spelling of 9203730075225 in words is "nine trillion, two hundred three billion, seven hundred thirty million, seventy-five thousand, two hundred twenty-five".