1425669 has 16 divisors (see below), whose sum is σ = 2248320. Its totient is φ = 786240.

The previous prime is 1425667. The next prime is 1425707. The reversal of 1425669 is 9665241.

It is not a de Polignac number, because 1425669 - 2¹ = 1425667 is a prime.

It is a super-2 number, since 2×1425669² = 4065064195122, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562 + ... + 1779.

It is an arithmetic number, because the mean of its divisors is an integer number (140520).

2^1425669 is an apocalyptic number.

It is an amenable number.

1425669 is a deficient number, since it is larger than the sum of its proper divisors (822651).

1425669 is a wasteful number, since it uses less digits than its factorization.

1425669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380.

The product of its digits is 12960, while the sum is 33.

The square root of 1425669 is about 1194.0138190155. The cubic root of 1425669 is about 112.5484630706.

Subtracting from 1425669 its sum of digits (33), we obtain a square (1425636 = 1194²).

The spelling of 1425669 in words is "one million, four hundred twenty-five thousand, six hundred sixty-nine".