1156563525 has 48 divisors (see below), whose sum is σ = 2063312384. Its totient is φ = 568270080.

The previous prime is 1156563521. The next prime is 1156563553. The reversal of 1156563525 is 5253656511.

It is not a de Polignac number, because 1156563525 - 2² = 1156563521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156563521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 737292 + ... + 738858.

Almost surely, 2^1156563525 is an apocalyptic number.

1156563525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1156563525 is a deficient number, since it is larger than the sum of its proper divisors (906748859).

1156563525 is a wasteful number, since it uses less digits than its factorization.

1156563525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350 (or 2345 counting only the distinct ones).

The product of its digits is 135000, while the sum is 39.

The square root of 1156563525 is about 34008.2861226496. The cubic root of 1156563525 is about 1049.6789721535.

The spelling of 1156563525 in words is "one billion, one hundred fifty-six million, five hundred sixty-three thousand, five hundred twenty-five".