7272531425 has 6 divisors (see below), whose sum is σ = 9017938998. Its totient is φ = 5818025120.

The previous prime is 7272531421. The next prime is 7272531433. The reversal of 7272531425 is 5241352727.

It can be written as a sum of positive squares in 3 ways, for example, as 1436182609 + 5836348816 = 37897^2 + 76396^2 .

It is not a de Polignac number, because 7272531425 - 2² = 7272531421 is a prime.

It is a super-2 number, since 2×7272531425² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7272531421) 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, 145450604 + ... + 145450653.

It is an arithmetic number, because the mean of its divisors is an integer number (1502989833).

Almost surely, 2^7272531425 is an apocalyptic number.

It is an amenable number.

7272531425 is a deficient number, since it is larger than the sum of its proper divisors (1745407573).

7272531425 is a wasteful number, since it uses less digits than its factorization.

7272531425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290901267 (or 290901262 counting only the distinct ones).

The product of its digits is 117600, while the sum is 38.

The square root of 7272531425 is about 85279.1382754305. The cubic root of 7272531425 is about 1937.4412208321.

The spelling of 7272531425 in words is "seven billion, two hundred seventy-two million, five hundred thirty-one thousand, four hundred twenty-five".