25278683452552 has 8 divisors (see below), whose sum is σ = 47397531473550. Its totient is φ = 12639341726272.

The previous prime is 25278683452541. The next prime is 25278683452553. The reversal of 25278683452552 is 25525438687252.

It can be written as a sum of positive squares in only one way, i.e., 17906557044996 + 7372126407556 = 4231614^2 + 2715166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25278683452553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1579917715777 + ... + 1579917715792.

Almost surely, 2^{25278683452552} is an apocalyptic number.

It is an amenable number.

25278683452552 is a deficient number, since it is larger than the sum of its proper divisors (22118848020998).

25278683452552 is a wasteful number, since it uses less digits than its factorization.

25278683452552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159835431575 (or 3159835431571 counting only the distinct ones).

The product of its digits is 322560000, while the sum is 64.

The spelling of 25278683452552 in words is "twenty-five trillion, two hundred seventy-eight billion, six hundred eighty-three million, four hundred fifty-two thousand, five hundred fifty-two".