11025415421 has 2 divisors, whose sum is σ = 11025415422. Its totient is φ = 11025415420.

The previous prime is 11025415417. The next prime is 11025415439. The reversal of 11025415421 is 12451452011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8946511396 + 2078904025 = 94586^2 + 45595^2 .

It is an emirp because it is prime and its reverse (12451452011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11025415421 - 2² = 11025415417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11025415441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5512707710 + 5512707711.

It is an arithmetic number, because the mean of its divisors is an integer number (5512707711).

Almost surely, 2^11025415421 is an apocalyptic number.

It is an amenable number.

11025415421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11025415421 is an equidigital number, since it uses as much as digits as its factorization.

11025415421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 11025415421 its reverse (12451452011), we get a palindrome (23476867432).

The spelling of 11025415421 in words is "eleven billion, twenty-five million, four hundred fifteen thousand, four hundred twenty-one".