25103211120523 has 4 divisors (see below), whose sum is σ = 25119069120288. Its totient is φ = 25087353120760.

The previous prime is 25103211120487. The next prime is 25103211120551. The reversal of 25103211120523 is 32502111230152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25103211120523 is a prime.

It is a super-2 number, since 2×25103211120523² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25103211120491 and 25103211120500.

It is not an unprimeable number, because it can be changed into a prime (25103211120583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7928997508 + ... + 7929000673.

It is an arithmetic number, because the mean of its divisors is an integer number (6279767280072).

Almost surely, 2^{25103211120523} is an apocalyptic number.

25103211120523 is a deficient number, since it is larger than the sum of its proper divisors (15857999765).

25103211120523 is a wasteful number, since it uses less digits than its factorization.

25103211120523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15857999764.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 25103211120523 its reverse (32502111230152), we get a palindrome (57605322350675).

The spelling of 25103211120523 in words is "twenty-five trillion, one hundred three billion, two hundred eleven million, one hundred twenty thousand, five hundred twenty-three".