7125674521 has 6 divisors (see below), whose sum is σ = 8289050010. Its totient is φ = 6107720976.

The previous prime is 7125674513. The next prime is 7125674527. The reversal of 7125674521 is 1254765217.

It can be written as a sum of positive squares in only one way, i.e., 5631001600 + 1494672921 = 75040^2 + 38661^2 .

It is not a de Polignac number, because 7125674521 - 2³ = 7125674513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7125674527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72710916 + ... + 72711013.

It is an arithmetic number, because the mean of its divisors is an integer number (1381508335).

Almost surely, 2^7125674521 is an apocalyptic number.

It is an amenable number.

7125674521 is a deficient number, since it is larger than the sum of its proper divisors (1163375489).

7125674521 is a wasteful number, since it uses less digits than its factorization.

7125674521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145421943 (or 145421936 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 7125674521 is about 84413.7105036854. The cubic root of 7125674521 is about 1924.3112864084.

The spelling of 7125674521 in words is "seven billion, one hundred twenty-five million, six hundred seventy-four thousand, five hundred twenty-one".