25745702746 has 4 divisors (see below), whose sum is σ = 38618554122. Its totient is φ = 12872851372.

The previous prime is 25745702681. The next prime is 25745702747. The reversal of 25745702746 is 64720754752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24247161225 + 1498541521 = 155715^2 + 38711^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 25745702746.

It is not an unprimeable number, because it can be changed into a prime (25745702747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6436425685 + ... + 6436425688.

Almost surely, 2^25745702746 is an apocalyptic number.

25745702746 is a deficient number, since it is larger than the sum of its proper divisors (12872851376).

25745702746 is a wasteful number, since it uses less digits than its factorization.

25745702746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12872851375.

The product of its (nonzero) digits is 3292800, while the sum is 49.

The spelling of 25745702746 in words is "twenty-five billion, seven hundred forty-five million, seven hundred two thousand, seven hundred forty-six".