1901725 has 12 divisors (see below), whose sum is σ = 2695264. Its totient is φ = 1303920.

The previous prime is 1901719. The next prime is 1901749. The reversal of 1901725 is 5271091.

1901725 = T₅₁ + T₅₂ + ... + T₂₂₅.

It is not a de Polignac number, because 1901725 - 2³ = 1901717 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1901725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5259 + ... + 5608.

2^1901725 is an apocalyptic number.

It is an amenable number.

1901725 is a deficient number, since it is larger than the sum of its proper divisors (793539).

1901725 is a wasteful number, since it uses less digits than its factorization.

1901725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10884 (or 10879 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 1901725 is about 1379.0304565165. The cubic root of 1901725 is about 123.8937044326.

The spelling of 1901725 in words is "one million, nine hundred one thousand, seven hundred twenty-five".