25220557930 has 16 divisors (see below), whose sum is σ = 45403045344. Its totient is φ = 10086880720.

The previous prime is 25220557913. The next prime is 25220557969. The reversal of 25220557930 is 3975502252.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87052 + ... + 240871.

It is an arithmetic number, because the mean of its divisors is an integer number (2837690334).

Almost surely, 2^25220557930 is an apocalyptic number.

25220557930 is a deficient number, since it is larger than the sum of its proper divisors (20182487414).

25220557930 is a wasteful number, since it uses less digits than its factorization.

25220557930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335621.

The product of its (nonzero) digits is 189000, while the sum is 40.

The spelling of 25220557930 in words is "twenty-five billion, two hundred twenty million, five hundred fifty-seven thousand, nine hundred thirty".