25278030028553 has 2 divisors, whose sum is σ = 25278030028554. Its totient is φ = 25278030028552.

The previous prime is 25278030028547. The next prime is 25278030028631. The reversal of 25278030028553 is 35582003087252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24612284999929 + 665745028624 = 4961077^2 + 815932^2 .

It is a cyclic number.

It is not a de Polignac number, because 25278030028553 - 2²⁰ = 25278028979977 is a prime.

It is not a weakly prime, because it can be changed into another prime (25278030028543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12639015014276 + 12639015014277.

It is an arithmetic number, because the mean of its divisors is an integer number (12639015014277).

Almost surely, 2^{25278030028553} is an apocalyptic number.

It is an amenable number.

25278030028553 is a deficient number, since it is larger than the sum of its proper divisors (1).

25278030028553 is an equidigital number, since it uses as much as digits as its factorization.

25278030028553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 25278030028553 in words is "twenty-five trillion, two hundred seventy-eight billion, thirty million, twenty-eight thousand, five hundred fifty-three".