2508526971889 has 3 divisors (see below), whose sum is σ = 2508528555723. Its totient is φ = 2508525388056.

The previous prime is 2508526971809. The next prime is 2508526971913. The reversal of 2508526971889 is 9881796258052.

The square root of 2508526971889 is 1583833.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 163365514225 + 2345161457664 = 404185^2 + 1531392^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2508526971889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2508526971809) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 791917 + ... + 2375749.

It is an arithmetic number, because the mean of its divisors is an integer number (836176185241).

Almost surely, 2^{2508526971889} is an apocalyptic number.

2508526971889 is the 1583833-rd square number.

2508526971889 is the 791917-th centered octagonal number.

It is an amenable number.

2508526971889 is a deficient number, since it is larger than the sum of its proper divisors (1583834).

2508526971889 is an frugal number, since it uses more digits than its factorization.

2508526971889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3167666 (or 1583833 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 70.

The spelling of 2508526971889 in words is "two trillion, five hundred eight billion, five hundred twenty-six million, nine hundred seventy-one thousand, eight hundred eighty-nine".