1125425565 has 48 divisors (see below), whose sum is σ = 2132095680. Its totient is φ = 544631040.

The previous prime is 1125425557. The next prime is 1125425573. The reversal of 1125425565 is 5655245211.

1125425565 is a `hidden beast` number, since 1 + 1 + 2 + 542 + 55 + 65 = 666.

It is an interprime number because it is at equal distance from previous prime (1125425557) and next prime (1125425573).

It is not a de Polignac number, because 1125425565 - 2³ = 1125425557 is a prime.

It is a super-3 number, since 3×1125425565³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 304569 + ... + 308241.

It is an arithmetic number, because the mean of its divisors is an integer number (44418660).

Almost surely, 2^1125425565 is an apocalyptic number.

1125425565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125425565 is a deficient number, since it is larger than the sum of its proper divisors (1006670115).

1125425565 is a wasteful number, since it uses less digits than its factorization.

1125425565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314 (or 4311 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 1125425565 is about 33547.3630111221. The cubic root of 1125425565 is about 1040.1730373447.

The spelling of 1125425565 in words is "one billion, one hundred twenty-five million, four hundred twenty-five thousand, five hundred sixty-five".