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BaseRepresentation
bin111111011111101…
…0101010100101001
312111110222012221201
41332333111110221
513330404003000
6551224404201
7103540135315
oct17677252451
95443865851
102130531625
119a36a1a42
124b5616661
1327c51ab01
14162d56b45
15c709896a
hex7efd5529

2130531625 has 8 divisors (see below), whose sum is σ = 2658903624. Its totient is φ = 1704425200.

The previous prime is 2130531589. The next prime is 2130531629. The reversal of 2130531625 is 5261350312.

Adding to 2130531625 its reverse (5261350312), we get a palindrome (7391881937).

It can be written as a sum of positive squares in 4 ways, for example, as 416323216 + 1714208409 = 20404^2 + 41403^2 .

It is not a de Polignac number, because 2130531625 - 213 = 2130523433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2130531593 and 2130531602.

It is not an unprimeable number, because it can be changed into a prime (2130531629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8522002 + ... + 8522251.

It is an arithmetic number, because the mean of its divisors is an integer number (332362953).

Almost surely, 22130531625 is an apocalyptic number.

2130531625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2130531625 is a deficient number, since it is larger than the sum of its proper divisors (528371999).

2130531625 is an equidigital number, since it uses as much as digits as its factorization.

2130531625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17044268 (or 17044258 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 2130531625 is about 46157.6821883422. The cubic root of 2130531625 is about 1286.7553868309.

The spelling of 2130531625 in words is "two billion, one hundred thirty million, five hundred thirty-one thousand, six hundred twenty-five".