10661225 has 12 divisors (see below), whose sum is σ = 13280400. Its totient is φ = 8490000.

The previous prime is 10661219. The next prime is 10661237. The reversal of 10661225 is 52216601.

10661225 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 not a de Polignac number, because 10661225 - 2²² = 6466921 is a prime.

It is a super-2 number, since 2×10661225² = 227323437001250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10661225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5426 + ... + 7124.

It is an arithmetic number, because the mean of its divisors is an integer number (1106700).

Almost surely, 2^10661225 is an apocalyptic number.

It is an amenable number.

10661225 is a deficient number, since it is larger than the sum of its proper divisors (2619175).

10661225 is a wasteful number, since it uses less digits than its factorization.

10661225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1955 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 10661225 is about 3265.1531357656. The cubic root of 10661225 is about 220.0910435850.

Adding to 10661225 its reverse (52216601), we get a palindrome (62877826).

The spelling of 10661225 in words is "ten million, six hundred sixty-one thousand, two hundred twenty-five".