25045051025 has 6 divisors (see below), whose sum is σ = 31055863302. Its totient is φ = 20036040800.

The previous prime is 25045051019. The next prime is 25045051033. The reversal of 25045051025 is 52015054052.

It can be written as a sum of positive squares in 3 ways, for example, as 31730689 + 25013320336 = 5633^2 + 158156^2 .

It is not a de Polignac number, because 25045051025 - 2²² = 25040856721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 500900996 + ... + 500901045.

It is an arithmetic number, because the mean of its divisors is an integer number (5175977217).

Almost surely, 2^25045051025 is an apocalyptic number.

25045051025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25045051025 is a deficient number, since it is larger than the sum of its proper divisors (6010812277).

25045051025 is a wasteful number, since it uses less digits than its factorization.

25045051025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001802051 (or 1001802046 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 25045051025 in words is "twenty-five billion, forty-five million, fifty-one thousand, twenty-five".