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25000093 = 57143783
BaseRepresentation
bin101111101011…
…1100010011101
31202001010200101
41133113202131
522400000333
62251501101
7422332366
oct137274235
952033611
1025000093
1113125a38
128457791
135244271
14346ab6d
1522dc67d
hex17d789d

25000093 has 4 divisors (see below), whose sum is σ = 25044448. Its totient is φ = 24955740.

The previous prime is 25000069. The next prime is 25000109. The reversal of 25000093 is 39000052.

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 a de Polignac number, because none of the positive numbers 2k-25000093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25000093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000033) 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, 21321 + ... + 22462.

It is an arithmetic number, because the mean of its divisors is an integer number (6261112).

Almost surely, 225000093 is an apocalyptic number.

It is an amenable number.

25000093 is a deficient number, since it is larger than the sum of its proper divisors (44355).

25000093 is an equidigital number, since it uses as much as digits as its factorization.

25000093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44354.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 25000093 is about 5000.0092999914. The cubic root of 25000093 is about 292.4021363990.

The spelling of 25000093 in words is "twenty-five million, ninety-three", and thus it is an aban number and an uban number.

Divisors: 1 571 43783 25000093