2111791625 has 32 divisors (see below), whose sum is σ = 2704306176. Its totient is φ = 1645800000.

The previous prime is 2111791609. The next prime is 2111791631. The reversal of 2111791625 is 5261971112.

It is a happy number.

It is not a de Polignac number, because 2111791625 - 2⁴ = 2111791609 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 999320 + ... + 1001430.

It is an arithmetic number, because the mean of its divisors is an integer number (84509568).

Almost surely, 2^2111791625 is an apocalyptic number.

2111791625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111791625 is a deficient number, since it is larger than the sum of its proper divisors (592514551).

2111791625 is a wasteful number, since it uses less digits than its factorization.

2111791625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330 (or 2320 counting only the distinct ones).

The product of its digits is 7560, while the sum is 35.

The square root of 2111791625 is about 45954.2340269099. The cubic root of 2111791625 is about 1282.9715355370.

The spelling of 2111791625 in words is "two billion, one hundred eleven million, seven hundred ninety-one thousand, six hundred twenty-five".