10421347225 has 27 divisors (see below), whose sum is σ = 13738769751. Its totient is φ = 7840128000.

The previous prime is 10421347187. The next prime is 10421347253. The reversal of 10421347225 is 52274312401.

It is a happy number.

The square root of 10421347225 is 102085.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 10032626569 + 388720656 = 100163^2 + 19716^2 .

It is not a de Polignac number, because 10421347225 - 2³³ = 1831412633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8676625 + ... + 8677825.

Almost surely, 2^10421347225 is an apocalyptic number.

10421347225 is the 102085-th square number.

10421347225 is the 51043-rd centered octagonal number.

It is an amenable number.

10421347225 is a deficient number, since it is larger than the sum of its proper divisors (3317422526).

10421347225 is an frugal number, since it uses more digits than its factorization.

10421347225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 10421347225 its reverse (52274312401), we get a palindrome (62695659626).

The spelling of 10421347225 in words is "ten billion, four hundred twenty-one million, three hundred forty-seven thousand, two hundred twenty-five".