25531001053 has 4 divisors (see below), whose sum is σ = 26012718108. Its totient is φ = 25049284000.

The previous prime is 25531001033. The next prime is 25531001059. The reversal of 25531001053 is 35010013552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20979204964 + 4551796089 = 144842^2 + 67467^2 .

It is not a de Polignac number, because 25531001053 - 2²⁵ = 25497446621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25531001059) 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, 240858448 + ... + 240858553.

It is an arithmetic number, because the mean of its divisors is an integer number (6503179527).

Almost surely, 2^25531001053 is an apocalyptic number.

It is an amenable number.

25531001053 is a deficient number, since it is larger than the sum of its proper divisors (481717055).

25531001053 is an equidigital number, since it uses as much as digits as its factorization.

25531001053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481717054.

The product of its (nonzero) digits is 2250, while the sum is 25.

The spelling of 25531001053 in words is "twenty-five billion, five hundred thirty-one million, one thousand, fifty-three".