25275093021 has 12 divisors (see below), whose sum is σ = 36512975772. Its totient is φ = 16847981376.

The previous prime is 25275092989. The next prime is 25275093037. The reversal of 25275093021 is 12039057252.

It can be written as a sum of positive squares in 2 ways, for example, as 21061265625 + 4213827396 = 145125^2 + 64914^2 .

It is not a de Polignac number, because 25275093021 - 2⁵ = 25275092989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25275093091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94566 + ... + 243911.

It is an arithmetic number, because the mean of its divisors is an integer number (3042747981).

Almost surely, 2^25275093021 is an apocalyptic number.

It is an amenable number.

25275093021 is a deficient number, since it is larger than the sum of its proper divisors (11237882751).

25275093021 is a wasteful number, since it uses less digits than its factorization.

25275093021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346780 (or 346777 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 25275093021 in words is "twenty-five billion, two hundred seventy-five million, ninety-three thousand, twenty-one".