125654985 has 12 divisors (see below), whose sum is σ = 217802052. Its totient is φ = 67015968.

The previous prime is 125654929. The next prime is 125654989. The reversal of 125654985 is 589456521.

125654985 is a `hidden beast` number, since 1 + 2 + 565 + 4 + 9 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47279376 + 78375609 = 6876^2 + 8853^2 .

It is not a de Polignac number, because 125654985 - 2¹³ = 125646793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2792333 = 125654985 / (1 + 2 + 5 + 6 + 5 + 4 + 9 + 8 + 5).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 125654985.

It is not an unprimeable number, because it can be changed into a prime (125654989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1396122 + ... + 1396211.

It is an arithmetic number, because the mean of its divisors is an integer number (18150171).

Almost surely, 2^125654985 is an apocalyptic number.

125654985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125654985 is a deficient number, since it is larger than the sum of its proper divisors (92147067).

125654985 is a wasteful number, since it uses less digits than its factorization.

125654985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792344 (or 2792341 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 125654985 is about 11209.5934359815. The cubic root of 125654985 is about 500.8717924059.

The spelling of 125654985 in words is "one hundred twenty-five million, six hundred fifty-four thousand, nine hundred eighty-five".