2135101525 has 6 divisors (see below), whose sum is σ = 2647525922. Its totient is φ = 1708081200.

The previous prime is 2135101511. The next prime is 2135101537. The reversal of 2135101525 is 5251015312.

It can be written as a sum of positive squares in 3 ways, for example, as 2232036 + 2132869489 = 1494^2 + 46183^2 .

It is not a de Polignac number, because 2135101525 - 2²⁵ = 2101547093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 85404061 = 2135101525 / (2 + 1 + 3 + 5 + 1 + 0 + 1 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2135101525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42702006 + ... + 42702055.

Almost surely, 2^2135101525 is an apocalyptic number.

2135101525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2135101525 is a deficient number, since it is larger than the sum of its proper divisors (512424397).

2135101525 is an equidigital number, since it uses as much as digits as its factorization.

2135101525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85404071 (or 85404066 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 2135101525 is about 46207.1588068343. The cubic root of 2135101525 is about 1287.6747417334.

Adding to 2135101525 its reverse (5251015312), we get a palindrome (7386116837).

The spelling of 2135101525 in words is "two billion, one hundred thirty-five million, one hundred one thousand, five hundred twenty-five".