1925541 has 6 divisors (see below), whose sum is σ = 2781350. Its totient is φ = 1283688.

The previous prime is 1925533. The next prime is 1925557. The reversal of 1925541 is 1455291.

It can be written as a sum of positive squares in only one way, i.e., 1822500 + 103041 = 1350^2 + 321^2 .

It is not a de Polignac number, because 1925541 - 2³ = 1925533 is a prime.

It is a Duffinian number.

It is a Curzon number.

1925541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1925501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106966 + ... + 106983.

2^1925541 is an apocalyptic number.

It is an amenable number.

1925541 is a deficient number, since it is larger than the sum of its proper divisors (855809).

1925541 is a wasteful number, since it uses less digits than its factorization.

1925541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213955 (or 213952 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 1925541 is about 1387.6386417220. The cubic root of 1925541 is about 124.4087491219.

Subtracting from 1925541 its product of digits (1800), we obtain a triangular number (1923741 = T₁₉₆₁).

The spelling of 1925541 in words is "one million, nine hundred twenty-five thousand, five hundred forty-one".