25454801280 has 64 divisors (see below), whose sum is σ = 81137185200. Its totient is φ = 6787946496.

The previous prime is 25454801227. The next prime is 25454801297. The reversal of 25454801280 is 8210845452.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

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, 6626935 + ... + 6630774.

Almost surely, 2^25454801280 is an apocalyptic number.

25454801280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25454801280 is an abundant number, since it is smaller than the sum of its proper divisors (55682383920).

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

25454801280 is a wasteful number, since it uses less digits than its factorization.

25454801280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13257731 (or 13257719 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 39.

The spelling of 25454801280 in words is "twenty-five billion, four hundred fifty-four million, eight hundred one thousand, two hundred eighty".