10525144421 has 16 divisors (see below), whose sum is σ = 11738677248. Its totient is φ = 9354826800.

The previous prime is 10525144417. The next prime is 10525144457. The reversal of 10525144421 is 12444152501.

It is a happy number.

It is not a de Polignac number, because 10525144421 - 2² = 10525144417 is a prime.

It is a super-2 number, since 2×10525144421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10525144321) 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 in 15 ways as a sum of consecutive naturals, for example, 502076 + ... + 522618.

It is an arithmetic number, because the mean of its divisors is an integer number (733667328).

Almost surely, 2^10525144421 is an apocalyptic number.

10525144421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10525144421 is a deficient number, since it is larger than the sum of its proper divisors (1213532827).

10525144421 is a wasteful number, since it uses less digits than its factorization.

10525144421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21592.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 10525144421 its reverse (12444152501), we get a palindrome (22969296922).

The spelling of 10525144421 in words is "ten billion, five hundred twenty-five million, one hundred forty-four thousand, four hundred twenty-one".