25510668011 has 4 divisors (see below), whose sum is σ = 25642847832. Its totient is φ = 25378488192.

The previous prime is 25510667957. The next prime is 25510668047. The reversal of 25510668011 is 11086601552.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25510668011 - 2⁶ = 25510667947 is a prime.

It is a super-2 number, since 2×25510668011² (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 (25510688011) 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, 66089621 + ... + 66090006.

It is an arithmetic number, because the mean of its divisors is an integer number (6410711958).

Almost surely, 2^25510668011 is an apocalyptic number.

25510668011 is a deficient number, since it is larger than the sum of its proper divisors (132179821).

25510668011 is a wasteful number, since it uses less digits than its factorization.

25510668011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132179820.

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 25510668011 in words is "twenty-five billion, five hundred ten million, six hundred sixty-eight thousand, eleven".