2491701925 has 6 divisors (see below), whose sum is σ = 3089710418. Its totient is φ = 1993361520.

The previous prime is 2491701899. The next prime is 2491701931. The reversal of 2491701925 is 5291071942.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 758561764 + 1733140161 = 27542^2 + 41631^2 .

It is not a de Polignac number, because 2491701925 - 2¹⁵ = 2491669157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 49834014 + ... + 49834063.

Almost surely, 2^2491701925 is an apocalyptic number.

2491701925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2491701925 is a deficient number, since it is larger than the sum of its proper divisors (598008493).

2491701925 is an equidigital number, since it uses as much as digits as its factorization.

2491701925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99668087 (or 99668082 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 2491701925 is about 49916.9502774358. The cubic root of 2491701925 is about 1355.7055144116.

The spelling of 2491701925 in words is "two billion, four hundred ninety-one million, seven hundred one thousand, nine hundred twenty-five".