25441845025 has 81 divisors (see below), whose sum is σ = 35289602649. Its totient is φ = 18191226240.

The previous prime is 25441845019. The next prime is 25441845041. The reversal of 25441845025 is 52054814452.

The square root of 25441845025 is 159505.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 139216401 + 25302628624 = 11799^2 + 159068^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25441845025 is a prime.

It is a super-2 number, since 2×25441845025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 348518389 + ... + 348518461.

Almost surely, 2^25441845025 is an apocalyptic number.

25441845025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25441845025 is the 159505-th square number.

25441845025 is the 79753-rd centered octagonal number.

It is an amenable number.

25441845025 is a deficient number, since it is larger than the sum of its proper divisors (9847757624).

25441845025 is an equidigital number, since it uses as much as digits as its factorization.

25441845025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 40.

The spelling of 25441845025 in words is "twenty-five billion, four hundred forty-one million, eight hundred forty-five thousand, twenty-five".