2131203525 has 48 divisors (see below), whose sum is σ = 3882126528. Its totient is φ = 1023040000.

The previous prime is 2131203509. The next prime is 2131203553. The reversal of 2131203525 is 5253021312.

It is a happy number.

It is not a de Polignac number, because 2131203525 - 2⁴ = 2131203509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131203495 and 2131203504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70537 + ... + 96113.

It is an arithmetic number, because the mean of its divisors is an integer number (80877636).

Almost surely, 2^2131203525 is an apocalyptic number.

2131203525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2131203525 is a deficient number, since it is larger than the sum of its proper divisors (1750923003).

2131203525 is a wasteful number, since it uses less digits than its factorization.

2131203525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25702 (or 25697 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2131203525 is about 46164.9599263337. The cubic root of 2131203525 is about 1286.8906394700.

Adding to 2131203525 its reverse (5253021312), we get a palindrome (7384224837).

The spelling of 2131203525 in words is "two billion, one hundred thirty-one million, two hundred three thousand, five hundred twenty-five".