2495125721 has 8 divisors (see below), whose sum is σ = 2840301504. Its totient is φ = 2169674320.

The previous prime is 2495125709. The next prime is 2495125723. The reversal of 2495125721 is 1275215942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2495125721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2495125723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4930826 + ... + 4931331.

It is an arithmetic number, because the mean of its divisors is an integer number (355037688).

Almost surely, 2^2495125721 is an apocalyptic number.

It is an amenable number.

2495125721 is a deficient number, since it is larger than the sum of its proper divisors (345175783).

2495125721 is a wasteful number, since it uses less digits than its factorization.

2495125721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9862191.

The product of its digits is 50400, while the sum is 38.

The square root of 2495125721 is about 49951.2334282148. The cubic root of 2495125721 is about 1356.3261791722.

The spelling of 2495125721 in words is "two billion, four hundred ninety-five million, one hundred twenty-five thousand, seven hundred twenty-one".