1536531825 has 24 divisors (see below), whose sum is σ = 2689836768. Its totient is φ = 771278080.

The previous prime is 1536531823. The next prime is 1536531863. The reversal of 1536531825 is 5281356351.

It is not a de Polignac number, because 1536531825 - 2¹ = 1536531823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1536531823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 601287 + ... + 603836.

It is an arithmetic number, because the mean of its divisors is an integer number (112076532).

Almost surely, 2^1536531825 is an apocalyptic number.

1536531825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1536531825 is a deficient number, since it is larger than the sum of its proper divisors (1153304943).

1536531825 is a wasteful number, since it uses less digits than its factorization.

1536531825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205153 (or 1205148 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The square root of 1536531825 is about 39198.6201925527. The cubic root of 1536531825 is about 1153.9328048344.

The spelling of 1536531825 in words is "one billion, five hundred thirty-six million, five hundred thirty-one thousand, eight hundred twenty-five".