25125135412 has 48 divisors (see below), whose sum is σ = 49884085440. Its totient is φ = 10976919552.

The previous prime is 25125135389. The next prime is 25125135419. The reversal of 25125135412 is 21453152152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125135419) 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, 1281588 + ... + 1301044.

It is an arithmetic number, because the mean of its divisors is an integer number (1039251780).

Almost surely, 2^25125135412 is an apocalyptic number.

It is an amenable number.

25125135412 is a deficient number, since it is larger than the sum of its proper divisors (24758950028).

25125135412 is a wasteful number, since it uses less digits than its factorization.

25125135412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20800 (or 20798 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

Adding to 25125135412 its reverse (21453152152), we get a palindrome (46578287564).

The spelling of 25125135412 in words is "twenty-five billion, one hundred twenty-five million, one hundred thirty-five thousand, four hundred twelve".