25144213511 has 12 divisors (see below), whose sum is σ = 26826998520. Its totient is φ = 23561738880.

The previous prime is 25144213499. The next prime is 25144213529. The reversal of 25144213511 is 11531244152.

It is a happy number.

It is not a de Polignac number, because 25144213511 - 2²² = 25140019207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25144213531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123785 + ... + 256146.

It is an arithmetic number, because the mean of its divisors is an integer number (2235583210).

Almost surely, 2^25144213511 is an apocalyptic number.

25144213511 is a deficient number, since it is larger than the sum of its proper divisors (1682785009).

25144213511 is a wasteful number, since it uses less digits than its factorization.

25144213511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380194 (or 380177 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

Adding to 25144213511 its reverse (11531244152), we get a palindrome (36675457663).

The spelling of 25144213511 in words is "twenty-five billion, one hundred forty-four million, two hundred thirteen thousand, five hundred eleven".