20254547653 has 2 divisors, whose sum is σ = 20254547654. Its totient is φ = 20254547652.

The previous prime is 20254547639. The next prime is 20254547701. The reversal of 20254547653 is 35674545202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11564206369 + 8690341284 = 107537^2 + 93222^2 .

It is a cyclic number.

It is not a de Polignac number, because 20254547653 - 2²¹ = 20252450501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20254547623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10127273826 + 10127273827.

It is an arithmetic number, because the mean of its divisors is an integer number (10127273827).

Almost surely, 2^20254547653 is an apocalyptic number.

It is an amenable number.

20254547653 is a deficient number, since it is larger than the sum of its proper divisors (1).

20254547653 is an equidigital number, since it uses as much as digits as its factorization.

20254547653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 43.

The spelling of 20254547653 in words is "twenty billion, two hundred fifty-four million, five hundred forty-seven thousand, six hundred fifty-three".