25115122312542 has 12 divisors (see below), whose sum is σ = 54416098343880. Its totient is φ = 8371707437508.

The previous prime is 25115122312541. The next prime is 25115122312547. The reversal of 25115122312542 is 24521322151152.

25115122312542 is a `hidden beast` number, since 2 + 5 + 11 + 51 + 22 + 31 + 2 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25115122312497 and 25115122312506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25115122312541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 697642286442 + ... + 697642286477.

It is an arithmetic number, because the mean of its divisors is an integer number (4534674861990).

Almost surely, 2^{25115122312542} is an apocalyptic number.

25115122312542 is an abundant number, since it is smaller than the sum of its proper divisors (29300976031338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25115122312542 is a wasteful number, since it uses less digits than its factorization.

25115122312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395284572927 (or 1395284572924 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

Adding to 25115122312542 its reverse (24521322151152), we get a palindrome (49636444463694).

The spelling of 25115122312542 in words is "twenty-five trillion, one hundred fifteen billion, one hundred twenty-two million, three hundred twelve thousand, five hundred forty-two".