10225700721 has 12 divisors (see below), whose sum is σ = 14804574148. Its totient is φ = 6801387264.

The previous prime is 10225700711. The next prime is 10225700729. The reversal of 10225700721 is 12700752201.

10225700721 is a `hidden beast` number, since 1 + 0 + 22 + 570 + 0 + 72 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 827367696 + 9398333025 = 28764^2 + 96945^2 .

It is not a de Polignac number, because 10225700721 - 2⁵ = 10225700689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10225700729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1308100 + ... + 1315893.

Almost surely, 2^10225700721 is an apocalyptic number.

It is an amenable number.

10225700721 is a deficient number, since it is larger than the sum of its proper divisors (4578873427).

10225700721 is a wasteful number, since it uses less digits than its factorization.

10225700721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624432 (or 2624429 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The spelling of 10225700721 in words is "ten billion, two hundred twenty-five million, seven hundred thousand, seven hundred twenty-one".