20125527143566 has 16 divisors (see below), whose sum is σ = 34221544131600. Its totient is φ = 8799825633408.

The previous prime is 20125527143531. The next prime is 20125527143567. The reversal of 20125527143566 is 66534172552102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125527143567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20369966251 + ... + 20369967238.

It is an arithmetic number, because the mean of its divisors is an integer number (2138846508225).

Almost surely, 2^{20125527143566} is an apocalyptic number.

20125527143566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20125527143566 is a deficient number, since it is larger than the sum of its proper divisors (14096016988034).

20125527143566 is a wasteful number, since it uses less digits than its factorization.

20125527143566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40739933523.

The product of its (nonzero) digits is 3024000, while the sum is 49.

Adding to 20125527143566 its reverse (66534172552102), we get a palindrome (86659699695668).

The spelling of 20125527143566 in words is "twenty trillion, one hundred twenty-five billion, five hundred twenty-seven million, one hundred forty-three thousand, five hundred sixty-six".