25112350021 has 4 divisors (see below), whose sum is σ = 27395290944. Its totient is φ = 22829409100.

The previous prime is 25112350019. The next prime is 25112350033. The reversal of 25112350021 is 12005321152.

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 25112350021 - 2¹ = 25112350019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25112349974 and 25112350001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25112350001) 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, 1141470445 + ... + 1141470466.

It is an arithmetic number, because the mean of its divisors is an integer number (6848822736).

Almost surely, 2^25112350021 is an apocalyptic number.

It is an amenable number.

25112350021 is a deficient number, since it is larger than the sum of its proper divisors (2282940923).

25112350021 is a wasteful number, since it uses less digits than its factorization.

25112350021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282940922.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 25112350021 its reverse (12005321152), we get a palindrome (37117671173).

It can be divided in two parts, 2511 and 2350021, that added together give a palindrome (2352532).

The spelling of 25112350021 in words is "twenty-five billion, one hundred twelve million, three hundred fifty thousand, twenty-one".