2190164525 has 12 divisors (see below), whose sum is σ = 2716948500. Its totient is φ = 1751393280.

The previous prime is 2190164521. The next prime is 2190164533. The reversal of 2190164525 is 5254610912.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 396726724 + 1793437801 = 19918^2 + 42349^2 .

It is not a de Polignac number, because 2190164525 - 2² = 2190164521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190164521) 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, 46541 + ... + 80909.

It is an arithmetic number, because the mean of its divisors is an integer number (226412375).

Almost surely, 2^2190164525 is an apocalyptic number.

2190164525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2190164525 is a deficient number, since it is larger than the sum of its proper divisors (526783975).

2190164525 is a wasteful number, since it uses less digits than its factorization.

2190164525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36928 (or 36923 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 2190164525 is about 46799.1936362156. The cubic root of 2190164525 is about 1298.6503794286.

The spelling of 2190164525 in words is "two billion, one hundred ninety million, one hundred sixty-four thousand, five hundred twenty-five".