100403113525 has 48 divisors (see below), whose sum is σ = 146375506368. Its totient is φ = 67352832000.

The previous prime is 100403113453. The next prime is 100403113529. The reversal of 100403113525 is 525311304001.

It is a happy number.

It is not a de Polignac number, because 100403113525 - 2¹³ = 100403105333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 100403113525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100403113529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5091685 + ... + 5111365.

It is an arithmetic number, because the mean of its divisors is an integer number (3049489716).

Almost surely, 2^100403113525 is an apocalyptic number.

It is an amenable number.

100403113525 is a deficient number, since it is larger than the sum of its proper divisors (45972392843).

100403113525 is a wasteful number, since it uses less digits than its factorization.

100403113525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21142 (or 21137 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 100403113525 its reverse (525311304001), we get a palindrome (625714417526).

The spelling of 100403113525 in words is "one hundred billion, four hundred three million, one hundred thirteen thousand, five hundred twenty-five".