2100725 has 12 divisors (see below), whose sum is σ = 2842080. Its totient is φ = 1527600.

The previous prime is 2100719. The next prime is 2100727. The reversal of 2100725 is 5270012.

It is not a de Polignac number, because 2100725 - 2⁶ = 2100661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3545 + ... + 4094.

It is an arithmetic number, because the mean of its divisors is an integer number (236840).

2^2100725 is an apocalyptic number.

2100725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2100725 is a deficient number, since it is larger than the sum of its proper divisors (741355).

2100725 is a wasteful number, since it uses less digits than its factorization.

2100725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660 (or 7655 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 2100725 is about 1449.3878017977. The cubic root of 2100725 is about 128.0726516269.

Adding to 2100725 its reverse (5270012), we get a palindrome (7370737).

The spelling of 2100725 in words is "two million, one hundred thousand, seven hundred twenty-five".