20254133429 has 2 divisors, whose sum is σ = 20254133430. Its totient is φ = 20254133428.

The previous prime is 20254133269. The next prime is 20254133453. The reversal of 20254133429 is 92433145202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16939022500 + 3315110929 = 130150^2 + 57577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20254133429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20254133729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10127066714 + 10127066715.

It is an arithmetic number, because the mean of its divisors is an integer number (10127066715).

Almost surely, 2^20254133429 is an apocalyptic number.

It is an amenable number.

20254133429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20254133429 is an equidigital number, since it uses as much as digits as its factorization.

20254133429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 20254133429 in words is "twenty billion, two hundred fifty-four million, one hundred thirty-three thousand, four hundred twenty-nine".