9741920652025 has 9 divisors (see below), whose sum is σ = 12080000960013. Its totient is φ = 7793524036800.

The previous prime is 9741920652011. The next prime is 9741920652029. The reversal of 9741920652025 is 5202560291479.

It is a happy number.

The square root of 9741920652025 is 3121205.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4176681078249 + 5565239573776 = 2043693^2 + 2359076^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9741920652025 is a prime.

It is a super-2 number, since 2×9741920652025² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9741920652029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15293905 + ... + 15918145.

Almost surely, 2^{9741920652025} is an apocalyptic number.

9741920652025 is the 3121205-th square number.

9741920652025 is the 1560603-rd centered octagonal number.

It is an amenable number.

9741920652025 is a deficient number, since it is larger than the sum of its proper divisors (2338080307988).

9741920652025 is an frugal number, since it uses more digits than its factorization.

9741920652025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248492 (or 624246 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 9741920652025 in words is "nine trillion, seven hundred forty-one billion, nine hundred twenty million, six hundred fifty-two thousand, twenty-five".