1540435425 has 48 divisors (see below), whose sum is σ = 2600220480. Its totient is φ = 804464640.

The previous prime is 1540435411. The next prime is 1540435439. The reversal of 1540435425 is 5245340451.

It is an interprime number because it is at equal distance from previous prime (1540435411) and next prime (1540435439).

It is not a de Polignac number, because 1540435425 - 2²² = 1536241121 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1490709 + ... + 1491741.

It is an arithmetic number, because the mean of its divisors is an integer number (54171260).

Almost surely, 2^1540435425 is an apocalyptic number.

1540435425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540435425 is a deficient number, since it is larger than the sum of its proper divisors (1059785055).

1540435425 is a wasteful number, since it uses less digits than its factorization.

1540435425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 1540435425 is about 39248.3811768078. The cubic root of 1540435425 is about 1154.9091774689.

Adding to 1540435425 its reverse (5245340451), we get a palindrome (6785775876).

The spelling of 1540435425 in words is "one billion, five hundred forty million, four hundred thirty-five thousand, four hundred twenty-five".