7129925 has 18 divisors (see below), whose sum is σ = 9722034. Its totient is φ = 5183200.

The previous prime is 7129877. The next prime is 7130003. The reversal of 7129925 is 5299217.

7129925 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 43681 + 7086244 = 209^2 + 2662^2 .

It is not a de Polignac number, because 7129925 - 2⁶ = 7129861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1847 + ... + 4203.

It is an arithmetic number, because the mean of its divisors is an integer number (540113).

Almost surely, 2^7129925 is an apocalyptic number.

It is an amenable number.

7129925 is a deficient number, since it is larger than the sum of its proper divisors (2592109).

7129925 is a wasteful number, since it uses less digits than its factorization.

7129925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389 (or 2373 counting only the distinct ones).

The product of its digits is 11340, while the sum is 35.

The square root of 7129925 is about 2670.1919406664. The cubic root of 7129925 is about 192.4693828857.

The spelling of 7129925 in words is "seven million, one hundred twenty-nine thousand, nine hundred twenty-five".