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25294069920 = 2535723332309
BaseRepresentation
bin10111100011101001…
…001110000010100000
32102021210020212220110
4113203221032002200
5403300240214140
615341523411320
71553545022040
oct274351160240
972253225813
1025294069920
11a7aa930119
124a9ab23b40
1325014390a2
14131d455720
159d090e380
hex5e3a4e0a0

25294069920 has 192 divisors, whose sum is σ = 91452291840. Its totient is φ = 5756510208.

The previous prime is 25294069919. The next prime is 25294069993. The reversal of 25294069920 is 2996049252.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 25294069920.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 766726 + ... + 799034.

It is an arithmetic number, because the mean of its divisors is an integer number (476314020).

Almost surely, 225294069920 is an apocalyptic number.

25294069920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25294069920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45726145920).

25294069920 is an abundant number, since it is smaller than the sum of its proper divisors (66158221920).

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

25294069920 is a wasteful number, since it uses less digits than its factorization.

25294069920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32567 (or 32559 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 25294069920 in words is "twenty-five billion, two hundred ninety-four million, sixty-nine thousand, nine hundred twenty".