2525394440 has 32 divisors (see below), whose sum is σ = 5690018880. Its totient is φ = 1008756672.

The previous prime is 2525394349. The next prime is 2525394451. The reversal of 2525394440 is 444935252.

It is a super-3 number, since 3×2525394440³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2525394394 and 2525394403.

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 7 ways as a sum of consecutive naturals, for example, 14342 + ... + 72501.

It is an arithmetic number, because the mean of its divisors is an integer number (177813090).

Almost surely, 2^2525394440 is an apocalyptic number.

2525394440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525394440 is an abundant number, since it is smaller than the sum of its proper divisors (3164624440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2525394440 is a wasteful number, since it uses less digits than its factorization.

2525394440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87581 (or 87577 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 2525394440 is about 50253.3027770315. The cubic root of 2525394440 is about 1361.7887434932.

The spelling of 2525394440 in words is "two billion, five hundred twenty-five million, three hundred ninety-four thousand, four hundred forty".