25620413492 has 12 divisors (see below), whose sum is σ = 44894645796. Its totient is φ = 12793371840.

The previous prime is 25620413491. The next prime is 25620413521. The reversal of 25620413492 is 29431402652.

It can be written as a sum of positive squares in 2 ways, for example, as 2475659536 + 23144753956 = 49756^2 + 152134^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620413491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4205303 + ... + 4211390.

It is an arithmetic number, because the mean of its divisors is an integer number (3741220483).

Almost surely, 2^25620413492 is an apocalyptic number.

It is an amenable number.

25620413492 is a deficient number, since it is larger than the sum of its proper divisors (19274232304).

25620413492 is a wasteful number, since it uses less digits than its factorization.

25620413492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8417458 (or 8417456 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 25620413492 in words is "twenty-five billion, six hundred twenty million, four hundred thirteen thousand, four hundred ninety-two".