20355625532 has 24 divisors (see below), whose sum is σ = 39166740480. Its totient is φ = 9179699760.

The previous prime is 20355625523. The next prime is 20355625541. The reversal of 20355625532 is 23552655302.

It is an interprime number because it is at equal distance from previous prime (20355625523) and next prime (20355625541).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1815782 + ... + 1826957.

It is an arithmetic number, because the mean of its divisors is an integer number (1631947520).

Almost surely, 2^20355625532 is an apocalyptic number.

20355625532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20355625532 is a deficient number, since it is larger than the sum of its proper divisors (18811114948).

20355625532 is a wasteful number, since it uses less digits than its factorization.

20355625532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642881 (or 3642879 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 38.

The spelling of 20355625532 in words is "twenty billion, three hundred fifty-five million, six hundred twenty-five thousand, five hundred thirty-two".