101243252025 has 24 divisors (see below), whose sum is σ = 185987604960. Its totient is φ = 53996400720.

The previous prime is 101243252017. The next prime is 101243252039. The reversal of 101243252025 is 520252342101.

101243252025 is a `hidden beast` number, since 10 + 12 + 432 + 5 + 202 + 5 = 666.

It is not a de Polignac number, because 101243252025 - 2³ = 101243252017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 101243252025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74994327 + ... + 74995676.

It is an arithmetic number, because the mean of its divisors is an integer number (7749483540).

Almost surely, 2^101243252025 is an apocalyptic number.

101243252025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101243252025 is a deficient number, since it is larger than the sum of its proper divisors (84744352935).

101243252025 is a wasteful number, since it uses less digits than its factorization.

101243252025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149990022 (or 149990011 counting only the distinct ones).

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

Adding to 101243252025 its reverse (520252342101), we get a palindrome (621495594126).

The spelling of 101243252025 in words is "one hundred one billion, two hundred forty-three million, two hundred fifty-two thousand, twenty-five".