2102200725 has 24 divisors (see below), whose sum is σ = 3549594240. Its totient is φ = 1097317120.

The previous prime is 2102200721. The next prime is 2102200787. The reversal of 2102200725 is 5270022012.

It is a happy number.

It is not a de Polignac number, because 2102200725 - 2² = 2102200721 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102200721) 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, 294660 + ... + 301709.

It is an arithmetic number, because the mean of its divisors is an integer number (147899760).

Almost surely, 2^2102200725 is an apocalyptic number.

2102200725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2102200725 is a deficient number, since it is larger than the sum of its proper divisors (1447393515).

2102200725 is a wasteful number, since it uses less digits than its factorization.

2102200725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596429 (or 596424 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2102200725 is about 45849.7625402793. The cubic root of 2102200725 is about 1281.0263425585.

Adding to 2102200725 its reverse (5270022012), we get a palindrome (7372222737).

The spelling of 2102200725 in words is "two billion, one hundred two million, two hundred thousand, seven hundred twenty-five".