1540424225 has 24 divisors (see below), whose sum is σ = 1948095552. Its totient is φ = 1208088000.

The previous prime is 1540424209. The next prime is 1540424273. The reversal of 1540424225 is 5224240451.

It is not a de Polignac number, because 1540424225 - 2⁴ = 1540424209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257114 + ... + 263036.

It is an arithmetic number, because the mean of its divisors is an integer number (81170648).

Almost surely, 2^1540424225 is an apocalyptic number.

It is an amenable number.

1540424225 is a deficient number, since it is larger than the sum of its proper divisors (407671327).

1540424225 is a wasteful number, since it uses less digits than its factorization.

1540424225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137 (or 6132 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 1540424225 is about 39248.2384955045. The cubic root of 1540424225 is about 1154.9063784737.

Adding to 1540424225 its reverse (5224240451), we get a palindrome (6764664676).

The spelling of 1540424225 in words is "one billion, five hundred forty million, four hundred twenty-four thousand, two hundred twenty-five".