2531725 has 48 divisors (see below), whose sum is σ = 4071168. Its totient is φ = 1520640.

The previous prime is 2531717. The next prime is 2531741. The reversal of 2531725 is 5271352.

It is not a de Polignac number, because 2531725 - 2³ = 2531717 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 plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 2531725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68407 + ... + 68443.

It is an arithmetic number, because the mean of its divisors is an integer number (84816).

2^2531725 is an apocalyptic number.

2531725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2531725 is a deficient number, since it is larger than the sum of its proper divisors (1539443).

2531725 is a wasteful number, since it uses less digits than its factorization.

2531725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 89 counting only the distinct ones).

The product of its digits is 2100, while the sum is 25.

The square root of 2531725 is about 1591.1395287655. The cubic root of 2531725 is about 136.2925686925.

The spelling of 2531725 in words is "two million, five hundred thirty-one thousand, seven hundred twenty-five".