20250135135 has 64 divisors (see below), whose sum is σ = 36918120960. Its totient is φ = 10525282560.

The previous prime is 20250135131. The next prime is 20250135149. The reversal of 20250135135 is 53153105202.

It is a happy number.

20250135135 is a `hidden beast` number, since 20 + 2 + 501 + 3 + 5 + 135 = 666.

It is not a de Polignac number, because 20250135135 - 2² = 20250135131 is a prime.

It is a super-2 number, since 2×20250135135² (a number of 21 digits) contains 22 as substring.

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

20250135135 is a modest number, since divided by 135135 gives 20250 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20250135099 and 20250135108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20250135131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8207172 + ... + 8209638.

It is an arithmetic number, because the mean of its divisors is an integer number (576845640).

Almost surely, 2^20250135135 is an apocalyptic number.

20250135135 is a deficient number, since it is larger than the sum of its proper divisors (16667985825).

20250135135 is a wasteful number, since it uses less digits than its factorization.

20250135135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005 (or 3999 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 20250135135 in words is "twenty billion, two hundred fifty million, one hundred thirty-five thousand, one hundred thirty-five".