20339557525 has 24 divisors (see below), whose sum is σ = 28951093440. Its totient is φ = 13885656960.

The previous prime is 20339557523. The next prime is 20339557531. The reversal of 20339557525 is 52575593302.

It is not a de Polignac number, because 20339557525 - 2¹ = 20339557523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20339557523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216280 + ... + 295729.

It is an arithmetic number, because the mean of its divisors is an integer number (1206295560).

Almost surely, 2^20339557525 is an apocalyptic number.

20339557525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20339557525 is a deficient number, since it is larger than the sum of its proper divisors (8611535915).

20339557525 is a wasteful number, since it uses less digits than its factorization.

20339557525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512253 (or 512248 counting only the distinct ones).

The product of its (nonzero) digits is 1417500, while the sum is 46.

The spelling of 20339557525 in words is "twenty billion, three hundred thirty-nine million, five hundred fifty-seven thousand, five hundred twenty-five".