9617625261 has 8 divisors (see below), whose sum is σ = 14248333760. Its totient is φ = 6411750156.

The previous prime is 9617625247. The next prime is 9617625263. The reversal of 9617625261 is 1625267169.

9617625261 is a `hidden beast` number, since 9 + 6 + 17 + 625 + 2 + 6 + 1 = 666.

It is not a de Polignac number, because 9617625261 - 2⁷ = 9617625133 is a prime.

It is a super-2 number, since 2×9617625261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9617625263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178104145 + ... + 178104198.

It is an arithmetic number, because the mean of its divisors is an integer number (1781041720).

Almost surely, 2^9617625261 is an apocalyptic number.

It is an amenable number.

9617625261 is a deficient number, since it is larger than the sum of its proper divisors (4630708499).

9617625261 is a wasteful number, since it uses less digits than its factorization.

9617625261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356208352 (or 356208346 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 9617625261 is about 98069.4919992961. The cubic root of 9617625261 is about 2126.6170122539.

The spelling of 9617625261 in words is "nine billion, six hundred seventeen million, six hundred twenty-five thousand, two hundred sixty-one".