111604100425 has 12 divisors (see below), whose sum is σ = 138436944156. Its totient is φ = 89252403200.

The previous prime is 111604100407. The next prime is 111604100431. The reversal of 111604100425 is 524001406111.

It can be written as a sum of positive squares in 6 ways, for example, as 1101708864 + 110502391561 = 33192^2 + 332419^2 .

It is not a de Polignac number, because 111604100425 - 2⁷ = 111604100297 is a prime.

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

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 111604100425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 698056 + ... + 842905.

It is an arithmetic number, because the mean of its divisors is an integer number (11536412013).

Almost surely, 2^111604100425 is an apocalyptic number.

It is an amenable number.

111604100425 is a deficient number, since it is larger than the sum of its proper divisors (26832843731).

111604100425 is a wasteful number, since it uses less digits than its factorization.

111604100425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543868 (or 1543863 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 111604100425 its reverse (524001406111), we get a palindrome (635605506536).

The spelling of 111604100425 in words is "one hundred eleven billion, six hundred four million, one hundred thousand, four hundred twenty-five".