25164355653 has 6 divisors (see below), whose sum is σ = 36348513734. Its totient is φ = 16776237096.

The previous prime is 25164355633. The next prime is 25164355721. The reversal of 25164355653 is 35655346152.

25164355653 is a `hidden beast` number, since 2 + 5 + 1 + 6 + 43 + 556 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24092317089 + 1072038564 = 155217^2 + 32742^2 .

It is not a de Polignac number, because 25164355653 - 2¹² = 25164351557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25164355599 and 25164355608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25164355633) 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 5 ways as a sum of consecutive naturals, for example, 1398019750 + ... + 1398019767.

Almost surely, 2^25164355653 is an apocalyptic number.

It is an amenable number.

25164355653 is a deficient number, since it is larger than the sum of its proper divisors (11184158081).

25164355653 is a wasteful number, since it uses less digits than its factorization.

25164355653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796039523 (or 2796039520 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 45.

The spelling of 25164355653 in words is "twenty-five billion, one hundred sixty-four million, three hundred fifty-five thousand, six hundred fifty-three".