10725561 has 72 divisors (see below), whose sum is σ = 20620320. Its totient is φ = 5488560.

The previous prime is 10725553. The next prime is 10725577. The reversal of 10725561 is 16552701.

10725561 = T₄₁₈ + T₄₁₉ + ... + T₅₁₅.

10725561 is a `hidden beast` number, since 107 + 2 + 556 + 1 = 666.

10725561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10725561 - 2³ = 10725553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10725511) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 160050 + ... + 160116.

Almost surely, 2^10725561 is an apocalyptic number.

10725561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10725561 is a deficient number, since it is larger than the sum of its proper divisors (9894759).

10725561 is a wasteful number, since it uses less digits than its factorization.

10725561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 10725561 is about 3274.9902289931. The cubic root of 10725561 is about 220.5328749169.

The spelling of 10725561 in words is "ten million, seven hundred twenty-five thousand, five hundred sixty-one".