2291689625 has 16 divisors (see below), whose sum is σ = 2875032576. Its totient is φ = 1823734000.

The previous prime is 2291689619. The next prime is 2291689633. The reversal of 2291689625 is 5269861922.

It is a de Polignac number, because none of the positive numbers 2^k-2291689625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24119 + ... + 71868.

It is an arithmetic number, because the mean of its divisors is an integer number (179689536).

Almost surely, 2^2291689625 is an apocalyptic number.

2291689625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2291689625 is a deficient number, since it is larger than the sum of its proper divisors (583342951).

2291689625 is an equidigital number, since it uses as much as digits as its factorization.

2291689625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96193 (or 96183 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 2291689625 is about 47871.5951791874. The cubic root of 2291689625 is about 1318.4143849198.

The spelling of 2291689625 in words is "two billion, two hundred ninety-one million, six hundred eighty-nine thousand, six hundred twenty-five".