2491840525 has 12 divisors (see below), whose sum is σ = 3127112352. Its totient is φ = 1969453040.

The previous prime is 2491840523. The next prime is 2491840537. The reversal of 2491840525 is 5250481942.

It is a happy number.

It is not a de Polignac number, because 2491840525 - 2¹ = 2491840523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491840523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 598369 + ... + 602518.

It is an arithmetic number, because the mean of its divisors is an integer number (260592696).

Almost surely, 2^2491840525 is an apocalyptic number.

2491840525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2491840525 is a deficient number, since it is larger than the sum of its proper divisors (635271827).

2491840525 is a wasteful number, since it uses less digits than its factorization.

2491840525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200980 (or 1200975 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2491840525 is about 49918.3385640989. The cubic root of 2491840525 is about 1355.7306508185.

The spelling of 2491840525 in words is "two billion, four hundred ninety-one million, eight hundred forty thousand, five hundred twenty-five".