2501891625 has 32 divisors (see below), whose sum is σ = 4306723200. Its totient is φ = 1288324800.

The previous prime is 2501891621. The next prime is 2501891647. The reversal of 2501891625 is 5261981052.

It is not a de Polignac number, because 2501891625 - 2² = 2501891621 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2501891621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104155 + ... + 125904.

It is an arithmetic number, because the mean of its divisors is an integer number (134585100).

Almost surely, 2^2501891625 is an apocalyptic number.

2501891625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2501891625 is a deficient number, since it is larger than the sum of its proper divisors (1804831575).

2501891625 is a wasteful number, since it uses less digits than its factorization.

2501891625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230106 (or 230096 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 2501891625 is about 50018.9126731080. The cubic root of 2501891625 is about 1357.5510326789.

The spelling of 2501891625 in words is "two billion, five hundred one million, eight hundred ninety-one thousand, six hundred twenty-five".