25488485220 has 384 divisors, whose sum is σ = 84666580992. Its totient is φ = 5660467200.

The previous prime is 25488485219. The next prime is 25488485261. The reversal of 25488485220 is 2258488452.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25488485220.

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, 114298029 + ... + 114298251.

It is an arithmetic number, because the mean of its divisors is an integer number (220485888).

Almost surely, 2^25488485220 is an apocalyptic number.

25488485220 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 25488485220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42333290496).

25488485220 is an abundant number, since it is smaller than the sum of its proper divisors (59178095772).

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

25488485220 is a wasteful number, since it uses less digits than its factorization.

25488485220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 1638400, while the sum is 48.

The spelling of 25488485220 in words is "twenty-five billion, four hundred eighty-eight million, four hundred eighty-five thousand, two hundred twenty".