25870956346 has 4 divisors (see below), whose sum is σ = 38806434522. Its totient is φ = 12935478172.

The previous prime is 25870956341. The next prime is 25870956361. The reversal of 25870956346 is 64365907852.

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., 23719388121 + 2151568225 = 154011^2 + 46385^2 .

It is not an unprimeable number, because it can be changed into a prime (25870956341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6467739085 + ... + 6467739088.

Almost surely, 2^25870956346 is an apocalyptic number.

25870956346 is a deficient number, since it is larger than the sum of its proper divisors (12935478176).

25870956346 is a wasteful number, since it uses less digits than its factorization.

25870956346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12935478175.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 25870956346 in words is "twenty-five billion, eight hundred seventy million, nine hundred fifty-six thousand, three hundred forty-six".