1625901 has 4 divisors (see below), whose sum is σ = 2167872. Its totient is φ = 1083932.

The previous prime is 1625879. The next prime is 1625903. The reversal of 1625901 is 1095261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1625901 - 2⁶ = 1625837 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625903) 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, 270981 + ... + 270986.

It is an arithmetic number, because the mean of its divisors is an integer number (541968).

2^1625901 is an apocalyptic number.

It is an amenable number.

1625901 is a deficient number, since it is larger than the sum of its proper divisors (541971).

1625901 is an equidigital number, since it uses as much as digits as its factorization.

1625901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541970.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1625901 is about 1275.1082307004. The cubic root of 1625901 is about 117.5884591155.

The spelling of 1625901 in words is "one million, six hundred twenty-five thousand, nine hundred one".