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30250255253 = 55589544177
BaseRepresentation
bin11100001011000011…
…100100001110010101
32220002012012012001012
4130023003210032111
5443423031132003
621521411542005
72120425633001
oct341303441625
986065165035
1030250255253
1111913531559
125a428ba905
132b11196a2a
14166d78d701
15bc0aad8d8
hex70b0e4395

30250255253 has 4 divisors (see below), whose sum is σ = 30250855020. Its totient is φ = 30249655488.

The previous prime is 30250255241. The next prime is 30250255261. The reversal of 30250255253 is 35255205203.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10307731729 + 19942523524 = 101527^2 + 141218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30250255253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30250215253) 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, 216500 + ... + 327677.

It is an arithmetic number, because the mean of its divisors is an integer number (7562713755).

Almost surely, 230250255253 is an apocalyptic number.

It is an amenable number.

30250255253 is a deficient number, since it is larger than the sum of its proper divisors (599767).

30250255253 is an equidigital number, since it uses as much as digits as its factorization.

30250255253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599766.

The product of its (nonzero) digits is 45000, while the sum is 32.

The spelling of 30250255253 in words is "thirty billion, two hundred fifty million, two hundred fifty-five thousand, two hundred fifty-three".

Divisors: 1 55589 544177 30250255253