9091280280625 has 15 divisors (see below), whose sum is σ = 11360558033517. Its totient is φ = 7272963921000.

The previous prime is 9091280280553. The next prime is 9091280280629. The reversal of 9091280280625 is 5260820821909.

The square root of 9091280280625 is 3015175.

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

It can be written as a sum of positive squares in 2 ways, for example, as 712756374001 + 8378523906624 = 844249^2 + 2894568^2 .

It is not a de Polignac number, because 9091280280625 - 2⁷ = 9091280280497 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9091280280629) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 75319072 + ... + 75439678.

Almost surely, 2^{9091280280625} is an apocalyptic number.

9091280280625 is the 3015175-th square number.

9091280280625 is the 1507588-th centered octagonal number.

It is an amenable number.

9091280280625 is a deficient number, since it is larger than the sum of its proper divisors (2269277752892).

9091280280625 is an frugal number, since it uses more digits than its factorization.

9091280280625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241234 (or 120612 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 9091280280625 in words is "nine trillion, ninety-one billion, two hundred eighty million, two hundred eighty thousand, six hundred twenty-five".