1545423525 has 18 divisors (see below), whose sum is σ = 2768025650. Its totient is φ = 824225760.

The previous prime is 1545423487. The next prime is 1545423533. The reversal of 1545423525 is 5253245451.

It can be written as a sum of positive squares in 3 ways, for example, as 90611361 + 1454812164 = 9519^2 + 38142^2 .

It is not a de Polignac number, because 1545423525 - 2⁶ = 1545423461 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1545423525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3434050 + ... + 3434499.

Almost surely, 2^1545423525 is an apocalyptic number.

1545423525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1545423525 is a deficient number, since it is larger than the sum of its proper divisors (1222602125).

1545423525 is a wasteful number, since it uses less digits than its factorization.

1545423525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868565 (or 6868557 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 1545423525 is about 39311.8751142705. The cubic root of 1545423525 is about 1156.1544088493.

Adding to 1545423525 its reverse (5253245451), we get a palindrome (6798668976).

The spelling of 1545423525 in words is "one billion, five hundred forty-five million, four hundred twenty-three thousand, five hundred twenty-five".