1653235525 has 12 divisors (see below), whose sum is σ = 2050566052. Its totient is φ = 1322231040.

The previous prime is 1653235523. The next prime is 1653235531. The reversal of 1653235525 is 5255323561.

It can be written as a sum of positive squares in 6 ways, for example, as 10797796 + 1642437729 = 3286^2 + 40527^2 .

It is not a de Polignac number, because 1653235525 - 2¹ = 1653235523 is a prime.

It is a super-2 number, since 2×1653235525² = 5466375402244051250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653235523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124507 + ... + 137143.

Almost surely, 2^1653235525 is an apocalyptic number.

It is an amenable number.

1653235525 is a deficient number, since it is larger than the sum of its proper divisors (397330527).

1653235525 is a wasteful number, since it uses less digits than its factorization.

1653235525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17880 (or 17875 counting only the distinct ones).

The product of its digits is 135000, while the sum is 37.

The square root of 1653235525 is about 40659.9990777176. Note that the first 3 decimals coincide. The cubic root of 1653235525 is about 1182.4376318257.

The spelling of 1653235525 in words is "one billion, six hundred fifty-three million, two hundred thirty-five thousand, five hundred twenty-five".