25606400746 has 8 divisors (see below), whose sum is σ = 38414523204. Its totient is φ = 12801559680.

The previous prime is 25606400741. The next prime is 25606400753. The reversal of 25606400746 is 64700460652.

It can be written as a sum of positive squares in 2 ways, for example, as 22549527225 + 3056873521 = 150165^2 + 55289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25606400699 and 25606400708.

It is not an unprimeable number, because it can be changed into a prime (25606400741) 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, 800745 + ... + 832108.

Almost surely, 2^25606400746 is an apocalyptic number.

25606400746 is a deficient number, since it is larger than the sum of its proper divisors (12808122458).

25606400746 is a wasteful number, since it uses less digits than its factorization.

25606400746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640696.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 25606400746 in words is "twenty-five billion, six hundred six million, four hundred thousand, seven hundred forty-six".