25511718052 has 6 divisors (see below), whose sum is σ = 44645506598. Its totient is φ = 12755859024.

The previous prime is 25511718007. The next prime is 25511718053. The reversal of 25511718052 is 25081711552.

It can be written as a sum of positive squares in only one way, i.e., 18775576576 + 6736141476 = 137024^2 + 82074^2 .

It is not an unprimeable number, because it can be changed into a prime (25511718053) 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 as a sum of consecutive naturals, namely, 3188964753 + ... + 3188964760.

Almost surely, 2^25511718052 is an apocalyptic number.

It is an amenable number.

25511718052 is a deficient number, since it is larger than the sum of its proper divisors (19133788546).

25511718052 is a wasteful number, since it uses less digits than its factorization.

25511718052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377929517 (or 6377929515 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 37.

The spelling of 25511718052 in words is "twenty-five billion, five hundred eleven million, seven hundred eighteen thousand, fifty-two".