2531542725 has 54 divisors (see below), whose sum is σ = 4740210930. Its totient is φ = 1291392960.

The previous prime is 2531542723. The next prime is 2531542753. The reversal of 2531542725 is 5272451352.

2531542725 is a `hidden beast` number, since 2 + 531 + 54 + 2 + 72 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 211964481 + 2319578244 = 14559^2 + 48162^2 .

It is not a de Polignac number, because 2531542725 - 2¹ = 2531542723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2531542725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531542723) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 108391 + ... + 129659.

Almost surely, 2^2531542725 is an apocalyptic number.

2531542725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2531542725 is a deficient number, since it is larger than the sum of its proper divisors (2208668205).

2531542725 is a wasteful number, since it uses less digits than its factorization.

2531542725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21331 (or 21300 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 2531542725 is about 50314.4385340828. The cubic root of 2531542725 is about 1362.8929775745.

The spelling of 2531542725 in words is "two billion, five hundred thirty-one million, five hundred forty-two thousand, seven hundred twenty-five".