25557480000 has 840 divisors, whose sum is σ = 101669055488. Its totient is φ = 6096384000.

The previous prime is 25557479999. The next prime is 25557480001. The reversal of 25557480000 is 8475552.

It is a happy number.

25557480000 is a `hidden beast` number, since 2 + 5 + 5 + 574 + 80 + 0 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (25557479999) and next prime (25557480001).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25557480001) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 201239937 + ... + 201240063.

Almost surely, 2^25557480000 is an apocalyptic number.

25557480000 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 25557480000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50834527744).

25557480000 is an abundant number, since it is smaller than the sum of its proper divisors (76111575488).

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

25557480000 is a wasteful number, since it uses less digits than its factorization.

25557480000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The spelling of 25557480000 in words is "twenty-five billion, five hundred fifty-seven million, four hundred eighty thousand".