122645025 has 18 divisors (see below), whose sum is σ = 219671270. Its totient is φ = 65410560.

The previous prime is 122645009. The next prime is 122645113. The reversal of 122645025 is 520546221.

122645025 is a `hidden beast` number, since 12 + 2 + 645 + 0 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1292769 + 121352256 = 1137^2 + 11016^2 .

It is not a de Polignac number, because 122645025 - 2⁴ = 122645009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122645025.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 272320 + ... + 272769.

Almost surely, 2^122645025 is an apocalyptic number.

122645025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122645025 is a deficient number, since it is larger than the sum of its proper divisors (97026245).

122645025 is a wasteful number, since it uses less digits than its factorization.

122645025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545105 (or 545097 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 122645025 is about 11074.5214343555. The cubic root of 122645025 is about 496.8401055357.

The spelling of 122645025 in words is "one hundred twenty-two million, six hundred forty-five thousand, twenty-five".