25420031103 has 16 divisors (see below), whose sum is σ = 34320844800. Its totient is φ = 16733471040.

The previous prime is 25420031101. The next prime is 25420031149. The reversal of 25420031103 is 30113002452.

It is not a de Polignac number, because 25420031103 - 2¹ = 25420031101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25420031103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25420031101) 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, 132898 + ... + 261728.

It is an arithmetic number, because the mean of its divisors is an integer number (2145052800).

Almost surely, 2^25420031103 is an apocalyptic number.

25420031103 is a deficient number, since it is larger than the sum of its proper divisors (8900813697).

25420031103 is a wasteful number, since it uses less digits than its factorization.

25420031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129662.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 25420031103 its reverse (30113002452), we get a palindrome (55533033555).

The spelling of 25420031103 in words is "twenty-five billion, four hundred twenty million, thirty-one thousand, one hundred three".