2500655400 has 144 divisors (see below), whose sum is σ = 8464934400. Its totient is φ = 661530240.

The previous prime is 2500655387. The next prime is 2500655401. The reversal of 2500655400 is 45560052.

2500655400 is a `hidden beast` number, since 2 + 5 + 0 + 0 + 655 + 4 + 0 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (2500655401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 223131 + ... + 234069.

Almost surely, 2^2500655400 is an apocalyptic number.

2500655400 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 2500655400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4232467200).

2500655400 is an abundant number, since it is smaller than the sum of its proper divisors (5964279000).

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

2500655400 is a wasteful number, since it uses less digits than its factorization.

2500655400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088 (or 11076 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2500655400 is about 50006.5535705071. The cubic root of 2500655400 is about 1357.3273998885.

The spelling of 2500655400 in words is "two billion, five hundred million, six hundred fifty-five thousand, four hundred".