1625601 has 8 divisors (see below), whose sum is σ = 2179584. Its totient is φ = 1077680.

The previous prime is 1625587. The next prime is 1625629. The reversal of 1625601 is 1065261.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1625601 - 2¹¹ = 1623553 is a prime.

It is a super-2 number, since 2×1625601² = 5285157222402, which contains 22 as substring.

1625601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1625201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846 + ... + 1991.

It is an arithmetic number, because the mean of its divisors is an integer number (272448).

2^1625601 is an apocalyptic number.

It is an amenable number.

1625601 is a deficient number, since it is larger than the sum of its proper divisors (553983).

1625601 is a wasteful number, since it uses less digits than its factorization.

1625601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1625601 is about 1274.9905882006. The cubic root of 1625601 is about 117.5812264677.

The spelling of 1625601 in words is "one million, six hundred twenty-five thousand, six hundred one".