1541161225 has 6 divisors (see below), whose sum is σ = 1911039950. Its totient is φ = 1232928960.

The previous prime is 1541161217. The next prime is 1541161229. The reversal of 1541161225 is 5221611451.

It can be written as a sum of positive squares in 3 ways, for example, as 5148361 + 1536012864 = 2269^2 + 39192^2 .

It is not a de Polignac number, because 1541161225 - 2³ = 1541161217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1541161193 and 1541161202.

It is not an unprimeable number, because it can be changed into a prime (1541161229) 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, 30823200 + ... + 30823249.

Almost surely, 2^1541161225 is an apocalyptic number.

It is an amenable number.

1541161225 is a deficient number, since it is larger than the sum of its proper divisors (369878725).

1541161225 is an equidigital number, since it uses as much as digits as its factorization.

1541161225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61646459 (or 61646454 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 1541161225 is about 39257.6263291606. The cubic root of 1541161225 is about 1155.0905334355.

Adding to 1541161225 its reverse (5221611451), we get a palindrome (6762772676).

It can be divided in two parts, 15411 and 61225, that added together give a triangular number (76636 = T₃₉₁).

The spelling of 1541161225 in words is "one billion, five hundred forty-one million, one hundred sixty-one thousand, two hundred twenty-five".