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2425813 = 13186601
BaseRepresentation
bin1001010000001111010101
311120020120221
421100033111
51110111223
6123554341
726422225
oct11201725
94506527
102425813
111407605
1298b9b1
1366c1c0
14472085
1532db5d
hex2503d5

2425813 has 4 divisors (see below), whose sum is σ = 2612428. Its totient is φ = 2239200.

The previous prime is 2425799. The next prime is 2425837. The reversal of 2425813 is 3185242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3185242 = 21592621.

It can be written as a sum of positive squares in 2 ways, for example, as 1119364 + 1306449 = 1058^2 + 1143^2 .

It is a cyclic number.

It is not a de Polignac number, because 2425813 - 29 = 2425301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2425613) 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, 93288 + ... + 93313.

It is an arithmetic number, because the mean of its divisors is an integer number (653107).

22425813 is an apocalyptic number.

It is an amenable number.

2425813 is a deficient number, since it is larger than the sum of its proper divisors (186615).

2425813 is a wasteful number, since it uses less digits than its factorization.

2425813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186614.

The product of its digits is 1920, while the sum is 25.

The square root of 2425813 is about 1557.5021669327. The cubic root of 2425813 is about 134.3648813726.

The spelling of 2425813 in words is "two million, four hundred twenty-five thousand, eight hundred thirteen".

Divisors: 1 13 186601 2425813