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20252012431 = 73797633627
BaseRepresentation
bin10010110111000111…
…010010111110001111
31221021101201211022111
4102313013102332033
5312434003344211
613145330524451
71314602160010
oct226707227617
957241654274
1020252012431
118652807762
123b12436727
131ba9973311
14da1967007
157d7e4b421
hex4b71d2f8f

20252012431 has 8 divisors (see below), whose sum is σ = 23206229120. Its totient is φ = 17313063768.

The previous prime is 20252012357. The next prime is 20252012449. The reversal of 20252012431 is 13421025202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20252012431 - 215 = 20251979663 is a prime.

It is a super-2 number, since 2×202520124312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20252012471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3814161 + ... + 3819466.

It is an arithmetic number, because the mean of its divisors is an integer number (2900778640).

Almost surely, 220252012431 is an apocalyptic number.

20252012431 is a deficient number, since it is larger than the sum of its proper divisors (2954216689).

20252012431 is an equidigital number, since it uses as much as digits as its factorization.

20252012431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634013.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20252012431 its reverse (13421025202), we get a palindrome (33673037633).

The spelling of 20252012431 in words is "twenty billion, two hundred fifty-two million, twelve thousand, four hundred thirty-one".

Divisors: 1 7 379 2653 7633627 53435389 2893144633 20252012431