25103311453542 has 128 divisors (see below), whose sum is σ = 57743215165440. Its totient is φ = 7127007264000.

The previous prime is 25103311453481. The next prime is 25103311453543. The reversal of 25103311453542 is 24535411330152.

It is a self number, because there is not a number n which added to its sum of digits gives 25103311453542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25103311453543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12633774273 + ... + 12633776259.

It is an arithmetic number, because the mean of its divisors is an integer number (451118868480).

Almost surely, 2^{25103311453542} is an apocalyptic number.

25103311453542 is an abundant number, since it is smaller than the sum of its proper divisors (32639903711898).

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

25103311453542 is a wasteful number, since it uses less digits than its factorization.

25103311453542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 25103311453542 its reverse (24535411330152), we get a palindrome (49638722783694).

The spelling of 25103311453542 in words is "twenty-five trillion, one hundred three billion, three hundred eleven million, four hundred fifty-three thousand, five hundred forty-two".