10525421 has 8 divisors (see below), whose sum is σ = 11019264. Its totient is φ = 10034640.

The previous prime is 10525393. The next prime is 10525433. The reversal of 10525421 is 12452501.

10525421 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10525421 - 2⁶ = 10525357 is a prime.

It is a super-2 number, since 2×10525421² = 221568974454482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10525393 and 10525402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10525481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9140 + ... + 10226.

It is an arithmetic number, because the mean of its divisors is an integer number (1377408).

Almost surely, 2^10525421 is an apocalyptic number.

It is an amenable number.

10525421 is a deficient number, since it is larger than the sum of its proper divisors (493843).

10525421 is a wasteful number, since it uses less digits than its factorization.

10525421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 10525421 is about 3244.2905233656. The cubic root of 10525421 is about 219.1525316455.

Adding to 10525421 its reverse (12452501), we get a palindrome (22977922).

It can be divided in two parts, 10525 and 421, that multiplied together give a square (4431025 = 2105²).

The spelling of 10525421 in words is "ten million, five hundred twenty-five thousand, four hundred twenty-one".