2091597025 has 12 divisors (see below), whose sum is σ = 2964092032. Its totient is φ = 1434237840.

The previous prime is 2091597019. The next prime is 2091597029. The reversal of 2091597025 is 5207951902.

It is not a de Polignac number, because 2091597025 - 2⁵ = 2091596993 is a prime.

It is a super-2 number, since 2×2091597025² = 8749556229977701250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2091597029) 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, 5975817 + ... + 5976166.

Almost surely, 2^2091597025 is an apocalyptic number.

2091597025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2091597025 is a deficient number, since it is larger than the sum of its proper divisors (872495007).

2091597025 is a wasteful number, since it uses less digits than its factorization.

2091597025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952000 (or 11951995 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 2091597025 is about 45733.9810753448. The cubic root of 2091597025 is about 1278.8688381069.

The spelling of 2091597025 in words is "two billion, ninety-one million, five hundred ninety-seven thousand, twenty-five".