7621022725 has 6 divisors (see below), whose sum is σ = 9450068210. Its totient is φ = 6096818160.

The previous prime is 7621022713. The next prime is 7621022729. The reversal of 7621022725 is 5272201267.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16136289 + 7604886436 = 4017^2 + 87206^2 .

It is not a de Polignac number, because 7621022725 - 2¹⁷ = 7620891653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7621022729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152420430 + ... + 152420479.

Almost surely, 2^7621022725 is an apocalyptic number.

It is an amenable number.

7621022725 is a deficient number, since it is larger than the sum of its proper divisors (1829045485).

7621022725 is a wasteful number, since it uses less digits than its factorization.

7621022725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304840919 (or 304840914 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 7621022725 is about 87298.4692019282. The cubic root of 7621022725 is about 1967.9063127571.

The spelling of 7621022725 in words is "seven billion, six hundred twenty-one million, twenty-two thousand, seven hundred twenty-five".