122748525 has 18 divisors (see below), whose sum is σ = 219856650. Its totient is φ = 65465760.

The previous prime is 122748491. The next prime is 122748529. The reversal of 122748525 is 525847221.

It is a happy number.

122748525 is a `hidden beast` number, since 122 + 7 + 4 + 8 + 525 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 933156 + 121815369 = 966^2 + 11037^2 .

It is not a de Polignac number, because 122748525 - 2⁹ = 122748013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122748525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122748529) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 272550 + ... + 272999.

Almost surely, 2^122748525 is an apocalyptic number.

122748525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122748525 is a deficient number, since it is larger than the sum of its proper divisors (97108125).

122748525 is a wasteful number, since it uses less digits than its factorization.

122748525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545565 (or 545557 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 122748525 is about 11079.1933370620. The cubic root of 122748525 is about 496.9798271767.

The spelling of 122748525 in words is "one hundred twenty-two million, seven hundred forty-eight thousand, five hundred twenty-five".