25163443011 has 16 divisors (see below), whose sum is σ = 38497068288. Its totient is φ = 14321820000.

The previous prime is 25163443001. The next prime is 25163443037. The reversal of 25163443011 is 11034436152.

It is not a de Polignac number, because 25163443011 - 2¹⁵ = 25163410243 is a prime.

It is a super-2 number, since 2×25163443011² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25163443011.

It is not an unprimeable number, because it can be changed into a prime (25163443001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2381700 + ... + 2392241.

It is an arithmetic number, because the mean of its divisors is an integer number (2406066768).

Almost surely, 2^25163443011 is an apocalyptic number.

25163443011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25163443011 is a deficient number, since it is larger than the sum of its proper divisors (13333625277).

25163443011 is a wasteful number, since it uses less digits than its factorization.

25163443011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4774202.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 25163443011 its reverse (11034436152), we get a palindrome (36197879163).

The spelling of 25163443011 in words is "twenty-five billion, one hundred sixty-three million, four hundred forty-three thousand, eleven".