11402521220525 has 6 divisors (see below), whose sum is σ = 14139126313482. Its totient is φ = 9122016976400.

The previous prime is 11402521220507. The next prime is 11402521220527. The reversal of 11402521220525 is 52502212520411.

It can be written as a sum of positive squares in 3 ways, for example, as 1954188713929 + 9448332506596 = 1397923^2 + 3073814^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11402521220525 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11402521220491 and 11402521220500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402521220527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228050424386 + ... + 228050424435.

It is an arithmetic number, because the mean of its divisors is an integer number (2356521052247).

Almost surely, 2^{11402521220525} is an apocalyptic number.

It is an amenable number.

11402521220525 is a deficient number, since it is larger than the sum of its proper divisors (2736605092957).

11402521220525 is an equidigital number, since it uses as much as digits as its factorization.

11402521220525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456100848831 (or 456100848826 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 11402521220525 its reverse (52502212520411), we get a palindrome (63904733740936).

The spelling of 11402521220525 in words is "eleven trillion, four hundred two billion, five hundred twenty-one million, two hundred twenty thousand, five hundred twenty-five".