25465856452 has 24 divisors (see below), whose sum is σ = 47204076024. Its totient is φ = 11979528192.

The previous prime is 25465856443. The next prime is 25465856453.

25465856452 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 192487876 + 25273368576 = 13874^2 + 158976^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25465856452.

It is not an unprimeable number, because it can be changed into a prime (25465856453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121408 + ... + 256264.

It is an arithmetic number, because the mean of its divisors is an integer number (1966836501).

Almost surely, 2^25465856452 is an apocalyptic number.

It is an amenable number.

25465856452 is a deficient number, since it is larger than the sum of its proper divisors (21738219572).

25465856452 is a wasteful number, since it uses less digits than its factorization.

25465856452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137655 (or 137653 counting only the distinct ones).

The product of its digits is 11520000, while the sum is 52.

The spelling of 25465856452 in words is "twenty-five billion, four hundred sixty-five million, eight hundred fifty-six thousand, four hundred fifty-two".