25855255802 has 4 divisors (see below), whose sum is σ = 38782883706. Its totient is φ = 12927627900.

The previous prime is 25855255799. The next prime is 25855255807. The reversal of 25855255802 is 20855255852.

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., 22671023761 + 3184232041 = 150569^2 + 56429^2 .

It is not an unprimeable number, because it can be changed into a prime (25855255807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6463813949 + ... + 6463813952.

Almost surely, 2^25855255802 is an apocalyptic number.

25855255802 is a deficient number, since it is larger than the sum of its proper divisors (12927627904).

25855255802 is a wasteful number, since it uses less digits than its factorization.

25855255802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12927627903.

The product of its (nonzero) digits is 1600000, while the sum is 47.

The spelling of 25855255802 in words is "twenty-five billion, eight hundred fifty-five million, two hundred fifty-five thousand, eight hundred two".