1201266625 has 16 divisors (see below), whose sum is σ = 1614504528. Its totient is φ = 887088000.

The previous prime is 1201266607. The next prime is 1201266713. The reversal of 1201266625 is 5266621021.

It can be written as a sum of positive squares in 8 ways, for example, as 613107121 + 588159504 = 24761^2 + 24252^2 .

It is not a de Polignac number, because 1201266625 - 2⁵ = 1201266593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367996 + ... + 371245.

It is an arithmetic number, because the mean of its divisors is an integer number (100906533).

Almost surely, 2^1201266625 is an apocalyptic number.

It is an amenable number.

1201266625 is a deficient number, since it is larger than the sum of its proper divisors (413237903).

1201266625 is an equidigital number, since it uses as much as digits as its factorization.

1201266625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739269 (or 739259 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1201266625 is about 34659.2934867403. The cubic root of 1201266625 is about 1063.0323237977.

Adding to 1201266625 its reverse (5266621021), we get a palindrome (6467887646).

The spelling of 1201266625 in words is "one billion, two hundred one million, two hundred sixty-six thousand, six hundred twenty-five".