11421525 has 12 divisors (see below), whose sum is σ = 18883712. Its totient is φ = 6091440.

The previous prime is 11421523. The next prime is 11421533. The reversal of 11421525 is 52512411.

It is not a de Polignac number, because 11421525 - 2¹ = 11421523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76069 + ... + 76218.

Almost surely, 2^11421525 is an apocalyptic number.

11421525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11421525 is a deficient number, since it is larger than the sum of its proper divisors (7462187).

11421525 is a wasteful number, since it uses less digits than its factorization.

11421525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152300 (or 152295 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 11421525 is about 3379.5746773818. The cubic root of 11421525 is about 225.2032730906.

Adding to 11421525 its reverse (52512411), we get a palindrome (63933936).

The spelling of 11421525 in words is "eleven million, four hundred twenty-one thousand, five hundred twenty-five".