25523532020 has 24 divisors (see below), whose sum is σ = 61256477184. Its totient is φ = 8750925216.

The previous prime is 25523531989. The next prime is 25523532049. The reversal of 25523532020 is 2023532552.

It is a happy number.

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, 91155332 + ... + 91155611.

It is an arithmetic number, because the mean of its divisors is an integer number (2552353216).

Almost surely, 2^25523532020 is an apocalyptic number.

25523532020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25523532020 is an abundant number, since it is smaller than the sum of its proper divisors (35732945164).

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

25523532020 is a wasteful number, since it uses less digits than its factorization.

25523532020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182310959 (or 182310957 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

The spelling of 25523532020 in words is "twenty-five billion, five hundred twenty-three million, five hundred thirty-two thousand, twenty".