25421502959280 has 640 divisors, whose sum is σ = 95265674035200. Its totient is φ = 6211386187776.

The previous prime is 25421502959273. The next prime is 25421502959299. The reversal of 25421502959280 is 8295920512452.

25421502959280 is a `hidden beast` number, since 2 + 5 + 4 + 2 + 1 + 502 + 9 + 59 + 2 + 80 = 666.

It is a super-3 number, since 3×25421502959280³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 182901972 + ... + 183040908.

It is an arithmetic number, because the mean of its divisors is an integer number (148852615680).

Almost surely, 2^{25421502959280} is an apocalyptic number.

25421502959280 is a gapful number since it is divisible by the number (20) 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 25421502959280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47632837017600).

25421502959280 is an abundant number, since it is smaller than the sum of its proper divisors (69844171075920).

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

25421502959280 is a wasteful number, since it uses less digits than its factorization.

25421502959280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139138 (or 139126 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 25421502959280 in words is "twenty-five trillion, four hundred twenty-one billion, five hundred two million, nine hundred fifty-nine thousand, two hundred eighty".