20525111307 has 12 divisors (see below), whose sum is σ = 29649081384. Its totient is φ = 13682623680.

The previous prime is 20525111293. The next prime is 20525111351. The reversal of 20525111307 is 70311152502.

20525111307 is a `hidden beast` number, since 2 + 0 + 525 + 1 + 1 + 130 + 7 = 666.

It is not a de Polignac number, because 20525111307 - 2¹⁴ = 20525094923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20525111207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131832 + ... + 241722.

It is an arithmetic number, because the mean of its divisors is an integer number (2470756782).

Almost surely, 2^20525111307 is an apocalyptic number.

20525111307 is a deficient number, since it is larger than the sum of its proper divisors (9123970077).

20525111307 is a wasteful number, since it uses less digits than its factorization.

20525111307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130650 (or 130647 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

Adding to 20525111307 its reverse (70311152502), we get a palindrome (90836263809).

The spelling of 20525111307 in words is "twenty billion, five hundred twenty-five million, one hundred eleven thousand, three hundred seven".