25425511120542 has 64 divisors (see below), whose sum is σ = 59504395991040. Its totient is φ = 7172404848000.

The previous prime is 25425511120483. The next prime is 25425511120571. The reversal of 25425511120542 is 24502111552452.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 25425511120542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276667209 + ... + 276759092.

It is an arithmetic number, because the mean of its divisors is an integer number (929756187360).

Almost surely, 2^{25425511120542} is an apocalyptic number.

25425511120542 is an abundant number, since it is smaller than the sum of its proper divisors (34078884870498).

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

25425511120542 is a wasteful number, since it uses less digits than its factorization.

25425511120542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553426369.

The product of its (nonzero) digits is 160000, while the sum is 39.

Adding to 25425511120542 its reverse (24502111552452), we get a palindrome (49927622672994).

The spelling of 25425511120542 in words is "twenty-five trillion, four hundred twenty-five billion, five hundred eleven million, one hundred twenty thousand, five hundred forty-two".