9925651 has 4 divisors (see below), whose sum is σ = 9972904. Its totient is φ = 9878400.

The previous prime is 9925633. The next prime is 9925667. The reversal of 9925651 is 1565299.

9925651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1565299 = 331 ⋅4729.

It is a 7-Lehmer number, since φ(9925651) divides (9925651-1)⁷.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9925651 is a prime.

It is the 3151-st Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9925651.

It is not an unprimeable number, because it can be changed into a prime (9925051) by changing a digit.

It is a nontrivial repunit in base 3150.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23310 + ... + 23731.

It is an arithmetic number, because the mean of its divisors is an integer number (2493226).

Almost surely, 2^9925651 is an apocalyptic number.

9925651 is a deficient number, since it is larger than the sum of its proper divisors (47253).

9925651 is a wasteful number, since it uses less digits than its factorization.

9925651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47252.

The product of its digits is 24300, while the sum is 37.

The square root of 9925651 is about 3150.5001190287. The cubic root of 9925651 is about 214.9082067135.

The spelling of 9925651 in words is "nine million, nine hundred twenty-five thousand, six hundred fifty-one".