11403521125 has 8 divisors (see below), whose sum is σ = 14231594520. Its totient is φ = 9122816800.

The previous prime is 11403521117. The next prime is 11403521131. The reversal of 11403521125 is 52112530411.

It can be written as a sum of positive squares in 4 ways, for example, as 2167926721 + 9235594404 = 46561^2 + 96102^2 .

It is not a de Polignac number, because 11403521125 - 2³ = 11403521117 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 11403521125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45613960 + ... + 45614209.

It is an arithmetic number, because the mean of its divisors is an integer number (1778949315).

Almost surely, 2^11403521125 is an apocalyptic number.

It is an amenable number.

11403521125 is a deficient number, since it is larger than the sum of its proper divisors (2828073395).

11403521125 is an frugal number, since it uses more digits than its factorization.

11403521125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91228184 (or 91228174 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 11403521125 in words is "eleven billion, four hundred three million, five hundred twenty-one thousand, one hundred twenty-five".