25828701121 has 4 divisors (see below), whose sum is σ = 25830252544. Its totient is φ = 25827149700.

The previous prime is 25828701097. The next prime is 25828701163. The reversal of 25828701121 is 12110782852.

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 25828701121 - 2¹¹ = 25828699073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25828701221) 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, 750465 + ... + 784126.

It is an arithmetic number, because the mean of its divisors is an integer number (6457563136).

Almost surely, 2^25828701121 is an apocalyptic number.

It is an amenable number.

25828701121 is a deficient number, since it is larger than the sum of its proper divisors (1551423).

25828701121 is a wasteful number, since it uses less digits than its factorization.

25828701121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551422.

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 25828701121 in words is "twenty-five billion, eight hundred twenty-eight million, seven hundred one thousand, one hundred twenty-one".