1542521325 has 12 divisors (see below), whose sum is σ = 2550302048. Its totient is φ = 822678000.

The previous prime is 1542521273. The next prime is 1542521347. The reversal of 1542521325 is 5231252451.

It is not a de Polignac number, because 1542521325 - 2¹⁷ = 1542390253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1542521292 and 1542521301.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 10283401 + ... + 10283550.

Almost surely, 2^1542521325 is an apocalyptic number.

1542521325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1542521325 is a deficient number, since it is larger than the sum of its proper divisors (1007780723).

1542521325 is a wasteful number, since it uses less digits than its factorization.

1542521325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20566964 (or 20566959 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 1542521325 is about 39274.9452577594. The cubic root of 1542521325 is about 1155.4302289586.

Adding to 1542521325 its reverse (5231252451), we get a palindrome (6773773776).

The spelling of 1542521325 in words is "one billion, five hundred forty-two million, five hundred twenty-one thousand, three hundred twenty-five".