1427538825 has 18 divisors (see below), whose sum is σ = 2556881054. Its totient is φ = 761353920.

The previous prime is 1427538823. The next prime is 1427538869. The reversal of 1427538825 is 5288357241.

1427538825 is a `hidden beast` number, since 14 + 27 + 538 + 82 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 110502144 + 1317036681 = 10512^2 + 36291^2 .

It is not a de Polignac number, because 1427538825 - 2¹ = 1427538823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427538823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3172084 + ... + 3172533.

Almost surely, 2^1427538825 is an apocalyptic number.

1427538825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1427538825 is a deficient number, since it is larger than the sum of its proper divisors (1129342229).

1427538825 is a wasteful number, since it uses less digits than its factorization.

1427538825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344633 (or 6344625 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 1427538825 is about 37782.7847703157. The cubic root of 1427538825 is about 1125.9764559330.

The spelling of 1427538825 in words is "one billion, four hundred twenty-seven million, five hundred thirty-eight thousand, eight hundred twenty-five".