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19925312001 = 37948824381
BaseRepresentation
bin10010100011101001…
…000010001000000001
31220102121222201120120
4102203221002020001
5311301334441001
613053100330453
71303524233430
oct224351021001
956377881516
1019925312001
1184a5356901
123a40b43a29
131b5708735a
14d70403117
157b9416236
hex4a3a42201

19925312001 has 8 divisors (see below), whose sum is σ = 30362380224. Its totient is φ = 11385892560.

The previous prime is 19925311961. The next prime is 19925312003. The reversal of 19925312001 is 10021352991.

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

It is not a de Polignac number, because 19925312001 - 26 = 19925311937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19925312003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474412170 + ... + 474412211.

It is an arithmetic number, because the mean of its divisors is an integer number (3795297528).

Almost surely, 219925312001 is an apocalyptic number.

It is an amenable number.

19925312001 is a deficient number, since it is larger than the sum of its proper divisors (10437068223).

19925312001 is an equidigital number, since it uses as much as digits as its factorization.

19925312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948824391.

The product of its (nonzero) digits is 4860, while the sum is 33.

Adding to 19925312001 its reverse (10021352991), we get a palindrome (29946664992).

The spelling of 19925312001 in words is "nineteen billion, nine hundred twenty-five million, three hundred twelve thousand, one".

Divisors: 1 3 7 21 948824381 2846473143 6641770667 19925312001