25131066236 has 12 divisors (see below), whose sum is σ = 45398055360. Its totient is φ = 12160193280.

The previous prime is 25131066211. The next prime is 25131066251. The reversal of 25131066236 is 63266013152.

It is a junction number, because it is equal to n+sod(n) for n = 25131066196 and 25131066205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101334821 + ... + 101335068.

It is an arithmetic number, because the mean of its divisors is an integer number (3783171280).

Almost surely, 2^25131066236 is an apocalyptic number.

It is an amenable number.

25131066236 is a deficient number, since it is larger than the sum of its proper divisors (20266989124).

25131066236 is a wasteful number, since it uses less digits than its factorization.

25131066236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202669924 (or 202669922 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 25131066236 its reverse (63266013152), we get a palindrome (88397079388).

The spelling of 25131066236 in words is "twenty-five billion, one hundred thirty-one million, sixty-six thousand, two hundred thirty-six".