1013661525 has 24 divisors (see below), whose sum is σ = 1679758560. Its totient is φ = 539381440.

The previous prime is 1013661511. The next prime is 1013661527. The reversal of 1013661525 is 5251663101.

It is not a de Polignac number, because 1013661525 - 2¹¹ = 1013659477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013661492 and 1013661501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013661527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17971 + ... + 48479.

It is an arithmetic number, because the mean of its divisors is an integer number (69989940).

Almost surely, 2^1013661525 is an apocalyptic number.

1013661525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1013661525 is a deficient number, since it is larger than the sum of its proper divisors (666097035).

1013661525 is a wasteful number, since it uses less digits than its factorization.

1013661525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30965 (or 30960 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1013661525 is about 31838.0515264361. The cubic root of 1013661525 is about 1004.5332601654.

The spelling of 1013661525 in words is "one billion, thirteen million, six hundred sixty-one thousand, five hundred twenty-five".