25535130553 has 4 divisors (see below), whose sum is σ = 25668822528. Its totient is φ = 25401438580.

The previous prime is 25535130529. The next prime is 25535130581. The reversal of 25535130553 is 35503153552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25535130553 - 2²⁹ = 24998259641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25535133553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66845701 + ... + 66846082.

It is an arithmetic number, because the mean of its divisors is an integer number (6417205632).

Almost surely, 2^25535130553 is an apocalyptic number.

It is an amenable number.

25535130553 is a deficient number, since it is larger than the sum of its proper divisors (133691975).

25535130553 is a wasteful number, since it uses less digits than its factorization.

25535130553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133691974.

The product of its (nonzero) digits is 168750, while the sum is 37.

The spelling of 25535130553 in words is "twenty-five billion, five hundred thirty-five million, one hundred thirty thousand, five hundred fifty-three".