1138887525 has 12 divisors (see below), whose sum is σ = 1882960832. Its totient is φ = 607406640.

The previous prime is 1138887469. The next prime is 1138887539. The reversal of 1138887525 is 5257888311.

It is not a de Polignac number, because 1138887525 - 2⁷ = 1138887397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7592509 + ... + 7592658.

Almost surely, 2^1138887525 is an apocalyptic number.

1138887525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1138887525 is a deficient number, since it is larger than the sum of its proper divisors (744073307).

1138887525 is a wasteful number, since it uses less digits than its factorization.

1138887525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15185180 (or 15185175 counting only the distinct ones).

The product of its digits is 537600, while the sum is 48.

The square root of 1138887525 is about 33747.4076782203. The cubic root of 1138887525 is about 1044.3040091368.

The spelling of 1138887525 in words is "one billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, five hundred twenty-five".