1525423 has 2 divisors, whose sum is σ = 1525424. Its totient is φ = 1525422.
The previous prime is 1525421. The next prime is 1525471. The reversal of 1525423 is 3245251.
It is a weak prime.
It is an emirp because it is prime and its reverse (3245251) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1525423 - 21 = 1525421 is a prime.
Together with 1525421, it forms a pair of twin primes.
It is a junction number, because it is equal to n+sod(n) for n = 1525394 and 1525403.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1525421) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762711 + 762712.
It is an arithmetic number, because the mean of its divisors is an integer number (762712).
21525423 is an apocalyptic number.
1525423 is a deficient number, since it is larger than the sum of its proper divisors (1).
1525423 is an equidigital number, since it uses as much as digits as its factorization.
1525423 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1200, while the sum is 22.
The square root of 1525423 is about 1235.0801593419. The cubic root of 1525423 is about 115.1145173055.
The spelling of 1525423 in words is "one million, five hundred twenty-five thousand, four hundred twenty-three".
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