25340320202553 has 6 divisors (see below), whose sum is σ = 36602684737034. Its totient is φ = 16893546801696.

The previous prime is 25340320202551. The next prime is 25340320202581. The reversal of 25340320202553 is 35520202304352.

25340320202553 is a `hidden beast` number, since 2 + 53 + 4 + 0 + 32 + 0 + 20 + 2 + 553 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13114052696889 + 12226267505664 = 3621333^2 + 3496608^2 .

It is not a de Polignac number, because 25340320202553 - 2¹ = 25340320202551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25340320202551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1407795566800 + ... + 1407795566817.

Almost surely, 2^{25340320202553} is an apocalyptic number.

It is an amenable number.

25340320202553 is a deficient number, since it is larger than the sum of its proper divisors (11262364534481).

25340320202553 is a wasteful number, since it uses less digits than its factorization.

25340320202553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815591133623 (or 2815591133620 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 36.

The spelling of 25340320202553 in words is "twenty-five trillion, three hundred forty billion, three hundred twenty million, two hundred two thousand, five hundred fifty-three".