1522425 has 24 divisors (see below), whose sum is σ = 2571264. Its totient is φ = 794560.

The previous prime is 1522399. The next prime is 1522427. The reversal of 1522425 is 5242251.

It is a happy number.

It is not a de Polignac number, because 1522425 - 2⁶ = 1522361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1522427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3784 + ... + 4166.

It is an arithmetic number, because the mean of its divisors is an integer number (107136).

2^1522425 is an apocalyptic number.

1522425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1522425 is a deficient number, since it is larger than the sum of its proper divisors (1048839).

1522425 is a wasteful number, since it uses less digits than its factorization.

1522425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 444 counting only the distinct ones).

The product of its digits is 800, while the sum is 21.

The square root of 1522425 is about 1233.8658760173. The cubic root of 1522425 is about 115.0390541585.

Adding to 1522425 its reverse (5242251), we get a palindrome (6764676).

The spelling of 1522425 in words is "one million, five hundred twenty-two thousand, four hundred twenty-five".