9145725 has 24 divisors (see below), whose sum is σ = 15222240. Its totient is φ = 4845120.

The previous prime is 9145699. The next prime is 9145739. The reversal of 9145725 is 5275419.

It is not a de Polignac number, because 9145725 - 2⁵ = 9145693 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14466 + ... + 15084.

It is an arithmetic number, because the mean of its divisors is an integer number (634260).

Almost surely, 2^9145725 is an apocalyptic number.

It is an amenable number.

9145725 is a deficient number, since it is larger than the sum of its proper divisors (6076515).

9145725 is a wasteful number, since it uses less digits than its factorization.

9145725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 824 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 9145725 is about 3024.1899741914. The cubic root of 9145725 is about 209.1250444069.

It can be divided in two parts, 9145 and 725, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 9145725 in words is "nine million, one hundred forty-five thousand, seven hundred twenty-five".