2525257578 has 8 divisors (see below), whose sum is σ = 5050515168. Its totient is φ = 841752524.

The previous prime is 2525257577. The next prime is 2525257591. The reversal of 2525257578 is 8757525252.

2525257578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2525257578 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2525257573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210438126 + ... + 210438137.

It is an arithmetic number, because the mean of its divisors is an integer number (631314396).

Almost surely, 2^2525257578 is an apocalyptic number.

2525257578 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2525257578 is a wasteful number, since it uses less digits than its factorization.

2525257578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420876268.

The product of its digits is 1960000, while the sum is 48.

The square root of 2525257578 is about 50251.9410371381. The cubic root of 2525257578 is about 1361.7641426500.

The spelling of 2525257578 in words is "two billion, five hundred twenty-five million, two hundred fifty-seven thousand, five hundred seventy-eight".