1925281 has 8 divisors (see below), whose sum is σ = 2007720. Its totient is φ = 1843968.

The previous prime is 1925257. The next prime is 1925293. The reversal of 1925281 is 1825291.

It can be written as a sum of positive squares in 4 ways, for example, as 625681 + 1299600 = 791^2 + 1140^2 .

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

It is a 4-Lehmer number, since φ(1925281) divides (1925281-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 1925281 - 2¹³ = 1917089 is a prime.

It is a super-2 number, since 2×1925281² = 7413413857922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1925081) 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, 5545 + ... + 5881.

It is an arithmetic number, because the mean of its divisors is an integer number (250965).

2^1925281 is an apocalyptic number.

It is an amenable number.

1925281 is a deficient number, since it is larger than the sum of its proper divisors (82439).

1925281 is a wasteful number, since it uses less digits than its factorization.

1925281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563.

The product of its digits is 1440, while the sum is 28.

The square root of 1925281 is about 1387.5449542267. The cubic root of 1925281 is about 124.4031493570.

The spelling of 1925281 in words is "one million, nine hundred twenty-five thousand, two hundred eighty-one".