25550530330 has 72 divisors (see below), whose sum is σ = 51580212372. Its totient is φ = 9108223488.

The previous prime is 25550530279. The next prime is 25550530337. The reversal of 25550530330 is 3303505552.

It can be written as a sum of positive squares in 18 ways, for example, as 4531039969 + 21019490361 = 67313^2 + 144981^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25550530292 and 25550530301.

It is not an unprimeable number, because it can be changed into a prime (25550530337) 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, 1412302 + ... + 1430278.

Almost surely, 2^25550530330 is an apocalyptic number.

25550530330 is an abundant number, since it is smaller than the sum of its proper divisors (26029682042).

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

25550530330 is a wasteful number, since it uses less digits than its factorization.

25550530330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18068 (or 18026 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 31.

The spelling of 25550530330 in words is "twenty-five billion, five hundred fifty million, five hundred thirty thousand, three hundred thirty".