20525252311 has 4 divisors (see below), whose sum is σ = 21732620112. Its totient is φ = 19317884512.

The previous prime is 20525252281. The next prime is 20525252323. The reversal of 20525252311 is 11325252502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11325252502 = 2 ⋅5662626251.

It is a cyclic number.

It is not a de Polignac number, because 20525252311 - 2³¹ = 18377768663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20525252311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525252711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603683875 + ... + 603683908.

It is an arithmetic number, because the mean of its divisors is an integer number (5433155028).

Almost surely, 2^20525252311 is an apocalyptic number.

20525252311 is a deficient number, since it is larger than the sum of its proper divisors (1207367801).

20525252311 is a wasteful number, since it uses less digits than its factorization.

20525252311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207367800.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 20525252311 in words is "twenty billion, five hundred twenty-five million, two hundred fifty-two thousand, three hundred eleven".