1290525 has 12 divisors (see below), whose sum is σ = 2133792.
Its totient is φ = 688240.
The previous prime is 1290503. The next prime is 1290533. The reversal of 1290525 is 5250921.
It is not a de Polignac number, because 1290525 - 29 = 1290013 is a prime.
It is an alternating number because its digits alternate between odd and even.
It is a junction number, because it is equal to n+sod(n) for n = 1290495 and 1290504.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8529 + ... + 8678.
It is an arithmetic number, because the mean of its divisors is an integer number (177816).
21290525 is an apocalyptic number.
1290525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1290525 is a deficient number, since it is larger than the sum of its proper divisors (843267).
1290525 is a wasteful number, since it uses less digits than its factorization.
1290525 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 17220 (or 17215 counting only the distinct ones).
The product of its (nonzero) digits is 900, while the sum is 24.
The square root of 1290525 is about 1136.0127640128.
The cubic root of 1290525 is about 108.8734889986.
The spelling of 1290525 in words is "one million, two hundred ninety thousand, five hundred twenty-five".