20603065725 has 36 divisors (see below), whose sum is σ = 40257146592. Its totient is φ = 9989364000.

The previous prime is 20603065723. The next prime is 20603065751. The reversal of 20603065725 is 52756030602.

It is a happy number.

20603065725 is a `hidden beast` number, since 20 + 60 + 3 + 0 + 6 + 572 + 5 = 666.

It is not a de Polignac number, because 20603065725 - 2¹ = 20603065723 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20603065725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20603065723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4159761 + ... + 4164710.

It is an arithmetic number, because the mean of its divisors is an integer number (1118254072).

Almost surely, 2^20603065725 is an apocalyptic number.

20603065725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20603065725 is a deficient number, since it is larger than the sum of its proper divisors (19654080867).

20603065725 is a wasteful number, since it uses less digits than its factorization.

20603065725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8324498 (or 8324490 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 20603065725 in words is "twenty billion, six hundred three million, sixty-five thousand, seven hundred twenty-five".