947125985 has 32 divisors (see below), whose sum is σ = 1250756640. Its totient is φ = 684288000.

The previous prime is 947125979. The next prime is 947125987. The reversal of 947125985 is 589521749.

It can be written as a sum of positive squares in 16 ways, for example, as 136983616 + 810142369 = 11704^2 + 28463^2 .

It is not a de Polignac number, because 947125985 - 2¹⁶ = 947060449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (947125987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 583475 + ... + 585095.

It is an arithmetic number, because the mean of its divisors is an integer number (39086145).

Almost surely, 2^947125985 is an apocalyptic number.

It is an amenable number.

947125985 is a deficient number, since it is larger than the sum of its proper divisors (303630655).

947125985 is a wasteful number, since it uses less digits than its factorization.

947125985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829.

The product of its digits is 907200, while the sum is 50.

The square root of 947125985 is about 30775.4120199876. The cubic root of 947125985 is about 982.0552400819.

The spelling of 947125985 in words is "nine hundred forty-seven million, one hundred twenty-five thousand, nine hundred eighty-five".