4031540225 has 12 divisors (see below), whose sum is σ = 5293175724. Its totient is φ = 3035512320.

The previous prime is 4031540221. The next prime is 4031540231. The reversal of 4031540225 is 5220451304.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 525005569 + 3506534656 = 22913^2 + 59216^2 .

It is not a de Polignac number, because 4031540225 - 2² = 4031540221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4031540194 and 4031540203.

It is not an unprimeable number, because it can be changed into a prime (4031540221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4742564 + ... + 4743413.

It is an arithmetic number, because the mean of its divisors is an integer number (441097977).

Almost surely, 2^4031540225 is an apocalyptic number.

It is an amenable number.

4031540225 is a deficient number, since it is larger than the sum of its proper divisors (1261635499).

4031540225 is a wasteful number, since it uses less digits than its factorization.

4031540225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9486004 (or 9485999 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 4031540225 is about 63494.4109745102. The cubic root of 4031540225 is about 1591.5623824783.

Adding to 4031540225 its reverse (5220451304), we get a palindrome (9251991529).

The spelling of 4031540225 in words is "four billion, thirty-one million, five hundred forty thousand, two hundred twenty-five".