25280758011 has 4 divisors (see below), whose sum is σ = 33707677352. Its totient is φ = 16853838672.

The previous prime is 25280758003. The next prime is 25280758057. The reversal of 25280758011 is 11085708252.

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

It is not a de Polignac number, because 25280758011 - 2³ = 25280758003 is a prime.

It is a super-2 number, since 2×25280758011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25280751011) 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, 4213459666 + ... + 4213459671.

It is an arithmetic number, because the mean of its divisors is an integer number (8426919338).

Almost surely, 2^25280758011 is an apocalyptic number.

25280758011 is a deficient number, since it is larger than the sum of its proper divisors (8426919341).

25280758011 is an equidigital number, since it uses as much as digits as its factorization.

25280758011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426919340.

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 25280758011 in words is "twenty-five billion, two hundred eighty million, seven hundred fifty-eight thousand, eleven".