1625465 has 4 divisors (see below), whose sum is σ = 1950564. Its totient is φ = 1300368.

The previous prime is 1625461. The next prime is 1625471. The reversal of 1625465 is 5645261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 822649 + 802816 = 907^2 + 896^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625465 - 2² = 1625461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625461) 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, 162542 + ... + 162551.

It is an arithmetic number, because the mean of its divisors is an integer number (487641).

2^1625465 is an apocalyptic number.

It is an amenable number.

1625465 is a deficient number, since it is larger than the sum of its proper divisors (325099).

1625465 is an equidigital number, since it uses as much as digits as its factorization.

1625465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325098.

The product of its digits is 7200, while the sum is 29.

The square root of 1625465 is about 1274.9372533580. The cubic root of 1625465 is about 117.5779473743.

The spelling of 1625465 in words is "one million, six hundred twenty-five thousand, four hundred sixty-five".