2581975 has 24 divisors (see below), whose sum is σ = 3593520. Its totient is φ = 1824000.

The previous prime is 2581973. The next prime is 2581991. The reversal of 2581975 is 5791852.

It is not a de Polignac number, because 2581975 - 2¹ = 2581973 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11161 + ... + 11389.

It is an arithmetic number, because the mean of its divisors is an integer number (149730).

2^2581975 is an apocalyptic number.

2581975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2581975 is a deficient number, since it is larger than the sum of its proper divisors (1011545).

2581975 is a wasteful number, since it uses less digits than its factorization.

2581975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 286 counting only the distinct ones).

The product of its digits is 25200, while the sum is 37.

The square root of 2581975 is about 1606.8525134560. The cubic root of 2581975 is about 137.1883852334.

The spelling of 2581975 in words is "two million, five hundred eighty-one thousand, nine hundred seventy-five".