25677217452 has 24 divisors (see below), whose sum is σ = 63437831856. Its totient is φ = 8055597568.

The previous prime is 25677217399. The next prime is 25677217463. The reversal of 25677217452 is 25471277652.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62934153 + ... + 62934560.

It is an arithmetic number, because the mean of its divisors is an integer number (2643242994).

Almost surely, 2^25677217452 is an apocalyptic number.

It is an amenable number.

25677217452 is an abundant number, since it is smaller than the sum of its proper divisors (37760614404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25677217452 is a wasteful number, since it uses less digits than its factorization.

25677217452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125868737 (or 125868735 counting only the distinct ones).

The product of its digits is 1646400, while the sum is 48.

The spelling of 25677217452 in words is "twenty-five billion, six hundred seventy-seven million, two hundred seventeen thousand, four hundred fifty-two".