2531125503 has 20 divisors (see below), whose sum is σ = 3783394120. Its totient is φ = 1686377232.

The previous prime is 2531125433. The next prime is 2531125517. The reversal of 2531125503 is 3055211352.

It is a happy number.

2531125503 is a `hidden beast` number, since 2 + 5 + 31 + 125 + 503 = 666.

It is not a de Polignac number, because 2531125503 - 2¹⁶ = 2531059967 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531125403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136176 + ... + 153642.

It is an arithmetic number, because the mean of its divisors is an integer number (189169706).

Almost surely, 2^2531125503 is an apocalyptic number.

2531125503 is a deficient number, since it is larger than the sum of its proper divisors (1252268617).

2531125503 is a wasteful number, since it uses less digits than its factorization.

2531125503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19268 (or 19259 counting only the distinct ones).

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

The square root of 2531125503 is about 50310.2922173982. The cubic root of 2531125503 is about 1362.8181009430.

Adding to 2531125503 its reverse (3055211352), we get a palindrome (5586336855).

The spelling of 2531125503 in words is "two billion, five hundred thirty-one million, one hundred twenty-five thousand, five hundred three".