25645825278572 has 24 divisors (see below), whose sum is σ = 45178204139040. Its totient is φ = 12737810891520.

The previous prime is 25645825278553. The next prime is 25645825278583. The reversal of 25645825278572 is 27587252854652.

It is a super-3 number, since 3×25645825278572³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3154829 + ... + 7825892.

It is an arithmetic number, because the mean of its divisors is an integer number (1882425172460).

Almost surely, 2^{25645825278572} is an apocalyptic number.

It is an amenable number.

25645825278572 is a deficient number, since it is larger than the sum of its proper divisors (19532378860468).

25645825278572 is a wasteful number, since it uses less digits than its factorization.

25645825278572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10984601 (or 10984599 counting only the distinct ones).

The product of its digits is 752640000, while the sum is 68.

The spelling of 25645825278572 in words is "twenty-five trillion, six hundred forty-five billion, eight hundred twenty-five million, two hundred seventy-eight thousand, five hundred seventy-two".