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BaseRepresentation
bin10111100001001101…
…001001001001000101
32102011221021012201202
4113201031021021011
5403204301433042
615333502432245
71552540164521
oct274115111105
972157235652
1025253155397
11a789825468
124a89292685
1324c5b12202
141317c44d81
159cc02b632
hex5e1349245

25253155397 has 4 divisors (see below), whose sum is σ = 25681175040. Its totient is φ = 24825135756.

The previous prime is 25253155373. The next prime is 25253155439. The reversal of 25253155397 is 79355135252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25253155397 - 228 = 24984719941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25453155397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214009733 + ... + 214009850.

It is an arithmetic number, because the mean of its divisors is an integer number (6420293760).

Almost surely, 225253155397 is an apocalyptic number.

It is an amenable number.

25253155397 is a deficient number, since it is larger than the sum of its proper divisors (428019643).

25253155397 is an equidigital number, since it uses as much as digits as its factorization.

25253155397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428019642.

The product of its digits is 1417500, while the sum is 47.

The spelling of 25253155397 in words is "twenty-five billion, two hundred fifty-three million, one hundred fifty-five thousand, three hundred ninety-seven".

Divisors: 1 59 428019583 25253155397