25456465452 has 72 divisors (see below), whose sum is σ = 65346562288. Its totient is φ = 7707300480.

The previous prime is 25456465451. The next prime is 25456465453.

25456465452 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (25456465451) and next prime (25456465453).

It is not an unprimeable number, because it can be changed into a prime (25456465451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1789038 + ... + 1803210.

Almost surely, 2^25456465452 is an apocalyptic number.

25456465452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25456465452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32673281144).

25456465452 is an abundant number, since it is smaller than the sum of its proper divisors (39890096836).

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

25456465452 is a wasteful number, since it uses less digits than its factorization.

25456465452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15439 (or 15426 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 48.

Subtracting from 25456465452 its product of digits (5760000), we obtain a palindrome (25450705452).

The spelling of 25456465452 in words is "twenty-five billion, four hundred fifty-six million, four hundred sixty-five thousand, four hundred fifty-two".