971752725 has 36 divisors (see below), whose sum is σ = 1842907716. Its totient is φ = 487779840.

The previous prime is 971752711. The next prime is 971752751. The reversal of 971752725 is 527257179.

971752725 is a `hidden beast` number, since 97 + 17 + 527 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 18610596 + 953142129 = 4314^2 + 30873^2 .

It is not a de Polignac number, because 971752725 - 2⁴ = 971752709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 123202 + ... + 130851.

It is an arithmetic number, because the mean of its divisors is an integer number (51191881).

Almost surely, 2^971752725 is an apocalyptic number.

It is an amenable number.

971752725 is a deficient number, since it is larger than the sum of its proper divisors (871154991).

971752725 is a wasteful number, since it uses less digits than its factorization.

971752725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254086 (or 254078 counting only the distinct ones).

The product of its digits is 308700, while the sum is 45.

The square root of 971752725 is about 31172.9486093311. The cubic root of 971752725 is about 990.4941671265.

The spelling of 971752725 in words is "nine hundred seventy-one million, seven hundred fifty-two thousand, seven hundred twenty-five".