25052780025 has 144 divisors (see below), whose sum is σ = 56356809600. Its totient is φ = 10571299200.

The previous prime is 25052780023. The next prime is 25052780041. The reversal of 25052780025 is 52008725052.

25052780025 is a `hidden beast` number, since 2 + 50 + 527 + 80 + 0 + 2 + 5 = 666.

It is not a de Polignac number, because 25052780025 - 2¹ = 25052780023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25052780023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 990790 + ... + 1015760.

Almost surely, 2^25052780025 is an apocalyptic number.

25052780025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25052780025 is an abundant number, since it is smaller than the sum of its proper divisors (31304029575).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25052780025 is a wasteful number, since it uses less digits than its factorization.

25052780025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25021 (or 24999 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The spelling of 25052780025 in words is "twenty-five billion, fifty-two million, seven hundred eighty thousand, twenty-five".