135140143243025 has 12 divisors (see below), whose sum is σ = 167573922637212. Its totient is φ = 108112021035840.

The previous prime is 135140143243019. The next prime is 135140143243099. The reversal of 135140143243025 is 520342341041531.

It can be written as a sum of positive squares in 6 ways, for example, as 7090482537616 + 128049660705409 = 2662796^2 + 11315903^2 .

It is not a de Polignac number, because 135140143243025 - 2¹² = 135140143238929 is a prime.

It is a super-2 number, since 2×135140143243025² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 135140143243025.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50795819 + ... + 53390031.

It is an arithmetic number, because the mean of its divisors is an integer number (13964493553101).

Almost surely, 2^{135140143243025} is an apocalyptic number.

It is an amenable number.

135140143243025 is a deficient number, since it is larger than the sum of its proper divisors (32433779394187).

135140143243025 is a wasteful number, since it uses less digits than its factorization.

135140143243025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677940 (or 4677935 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 135140143243025 its reverse (520342341041531), we get a palindrome (655482484284556).

The spelling of 135140143243025 in words is "one hundred thirty-five trillion, one hundred forty billion, one hundred forty-three million, two hundred forty-three thousand, twenty-five".