1616425 has 24 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 1180800.

The previous prime is 1616401. The next prime is 1616429. The reversal of 1616425 is 5246161.

1616425 = 48² + 49² + ... + 170².

It is not a de Polignac number, because 1616425 - 2⁷ = 1616297 is a prime.

It is a super-2 number, since 2×1616425² = 5225659561250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1616425.

It is not an unprimeable number, because it can be changed into a prime (1616429) 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, 19434 + ... + 19516.

It is an arithmetic number, because the mean of its divisors is an integer number (91140).

2^1616425 is an apocalyptic number.

It is an amenable number.

1616425 is a deficient number, since it is larger than the sum of its proper divisors (570935).

1616425 is a wasteful number, since it uses less digits than its factorization.

1616425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 148 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 1616425 is about 1271.3870378449. The cubic root of 1616425 is about 117.3595726942.

The spelling of 1616425 in words is "one million, six hundred sixteen thousand, four hundred twenty-five".