1540054225 has 12 divisors (see below), whose sum is σ = 2022001164. Its totient is φ = 1159569920.

The previous prime is 1540054207. The next prime is 1540054237. The reversal of 1540054225 is 5224500451.

It can be written as a sum of positive squares in 6 ways, for example, as 904401 + 1539149824 = 951^2 + 39232^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1540054225 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1540054193 and 1540054202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1811404 + ... + 1812253.

It is an arithmetic number, because the mean of its divisors is an integer number (168500097).

Almost surely, 2^1540054225 is an apocalyptic number.

It is an amenable number.

1540054225 is a deficient number, since it is larger than the sum of its proper divisors (481946939).

1540054225 is a wasteful number, since it uses less digits than its factorization.

1540054225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623684 (or 3623679 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1540054225 is about 39243.5246250894. The cubic root of 1540054225 is about 1154.8139040392.

Adding to 1540054225 its reverse (5224500451), we get a palindrome (6764554676).

The spelling of 1540054225 in words is "one billion, five hundred forty million, fifty-four thousand, two hundred twenty-five".