25530366000 has 80 divisors (see below), whose sum is σ = 82309919328. Its totient is φ = 6808096000.

The previous prime is 25530365941. The next prime is 25530366011. The reversal of 25530366000 is 66303552.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2121531 + ... + 2133530.

Almost surely, 2^25530366000 is an apocalyptic number.

25530366000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25530366000 is an abundant number, since it is smaller than the sum of its proper divisors (56779553328).

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

25530366000 is a wasteful number, since it uses less digits than its factorization.

25530366000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4255087 (or 4255071 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 25530366000 its reverse (66303552), we get a palindrome (25596669552).

The spelling of 25530366000 in words is "twenty-five billion, five hundred thirty million, three hundred sixty-six thousand".