1425890 has 8 divisors (see below), whose sum is σ = 2566620. Its totient is φ = 570352.

The previous prime is 1425889. The next prime is 1425899. The reversal of 1425890 is 985241.

It can be written as a sum of positive squares in 2 ways, for example, as 1207801 + 218089 = 1099^2 + 467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1425899) 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, 71285 + ... + 71304.

2^1425890 is an apocalyptic number.

1425890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1425890 is a deficient number, since it is larger than the sum of its proper divisors (1140730).

1425890 is a wasteful number, since it uses less digits than its factorization.

1425890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142596.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1425890 is about 1194.1063604219. The cubic root of 1425890 is about 112.5542783346.

The spelling of 1425890 in words is "one million, four hundred twenty-five thousand, eight hundred ninety".