25578468312002 has 8 divisors (see below), whose sum is σ = 38371847218956. Its totient is φ = 12787852572352.

The previous prime is 25578468311989. The next prime is 25578468312011. The reversal of 25578468312002 is 20021386487552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18213101117761 + 7365367194241 = 4267681^2 + 2713921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690768683 + ... + 690805710.

Almost surely, 2^{25578468312002} is an apocalyptic number.

25578468312002 is a deficient number, since it is larger than the sum of its proper divisors (12793378906954).

25578468312002 is a wasteful number, since it uses less digits than its factorization.

25578468312002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381583652.

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 25578468312002 in words is "twenty-five trillion, five hundred seventy-eight billion, four hundred sixty-eight million, three hundred twelve thousand, two".