100019525 has 24 divisors (see below), whose sum is σ = 132205824. Its totient is φ = 74888000.

The previous prime is 100019503. The next prime is 100019527. The reversal of 100019525 is 525910001.

It is not a de Polignac number, because 100019525 - 2¹² = 100015429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100019525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100019527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25175 + ... + 28875.

It is an arithmetic number, because the mean of its divisors is an integer number (5508576).

Almost surely, 2^100019525 is an apocalyptic number.

It is an amenable number.

100019525 is a deficient number, since it is larger than the sum of its proper divisors (32186299).

100019525 is a wasteful number, since it uses less digits than its factorization.

100019525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781 (or 3776 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 100019525 is about 10000.9762023514. The cubic root of 100019525 is about 464.1890904027.

Adding to 100019525 its reverse (525910001), we get a palindrome (625929526).

The spelling of 100019525 in words is "one hundred million, nineteen thousand, five hundred twenty-five".