20357885525 has 12 divisors (see below), whose sum is σ = 25246038912. Its totient is φ = 16284849840.

The previous prime is 20357885519. The next prime is 20357885533. The reversal of 20357885525 is 52558875302.

It is not a de Polignac number, because 20357885525 - 2⁶ = 20357885461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314492 + ... + 373658.

It is an arithmetic number, because the mean of its divisors is an integer number (2103836576).

Almost surely, 2^20357885525 is an apocalyptic number.

20357885525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20357885525 is a deficient number, since it is larger than the sum of its proper divisors (4888153387).

20357885525 is a wasteful number, since it uses less digits than its factorization.

20357885525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72940 (or 72935 counting only the distinct ones).

The product of its (nonzero) digits is 3360000, while the sum is 50.

The spelling of 20357885525 in words is "twenty billion, three hundred fifty-seven million, eight hundred eighty-five thousand, five hundred twenty-five".