20455201525207 has 2 divisors, whose sum is σ = 20455201525208. Its totient is φ = 20455201525206.

The previous prime is 20455201525177. The next prime is 20455201525273. The reversal of 20455201525207 is 70252510255402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20455201525207 - 2¹⁹ = 20455201000919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20455201525207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20455201525307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10227600762603 + 10227600762604.

It is an arithmetic number, because the mean of its divisors is an integer number (10227600762604).

Almost surely, 2^{20455201525207} is an apocalyptic number.

20455201525207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20455201525207 is an equidigital number, since it uses as much as digits as its factorization.

20455201525207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280000, while the sum is 40.

The spelling of 20455201525207 in words is "twenty trillion, four hundred fifty-five billion, two hundred one million, five hundred twenty-five thousand, two hundred seven".