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25232203031 = 72602985411
BaseRepresentation
bin10111011111111101…
…001101110100010111
32102010110211201111012
4113133331031310113
5403133420444111
615331433402435
71552164121100
oct273775156427
972113751435
1025232203031
11a778a14662
124a8226941b
1324c1687469
14131514d3a7
159ca28d48b
hex5dff4dd17

25232203031 has 12 divisors (see below), whose sum is σ = 29356958520. Its totient is φ = 21623762160.

The previous prime is 25232203019. The next prime is 25232203037. The reversal of 25232203031 is 13030223252.

It is not a de Polignac number, because 25232203031 - 214 = 25232186647 is a prime.

It is a super-2 number, since 2×252322030312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25232202988 and 25232203006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25232203037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252716 + ... + 338126.

It is an arithmetic number, because the mean of its divisors is an integer number (2446413210).

Almost surely, 225232203031 is an apocalyptic number.

25232203031 is a deficient number, since it is larger than the sum of its proper divisors (4124755489).

25232203031 is an equidigital number, since it uses as much as digits as its factorization.

25232203031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91454 (or 91447 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 25232203031 its reverse (13030223252), we get a palindrome (38262426283).

The spelling of 25232203031 in words is "twenty-five billion, two hundred thirty-two million, two hundred three thousand, thirty-one".

Divisors: 1 7 49 6029 42203 85411 295421 597877 4185139 514942919 3604600433 25232203031