25058778625 has 8 divisors (see below), whose sum is σ = 31273355880. Its totient is φ = 20047022800.

The previous prime is 25058778571. The next prime is 25058778631. The reversal of 25058778625 is 52687785052.

It can be written as a sum of positive squares in 4 ways, for example, as 3609125776 + 21449652849 = 60076^2 + 146457^2 .

It is not a de Polignac number, because 25058778625 - 2²⁹ = 24521907713 is a prime.

It is a super-3 number, since 3×25058778625³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100234990 + ... + 100235239.

It is an arithmetic number, because the mean of its divisors is an integer number (3909169485).

Almost surely, 2^25058778625 is an apocalyptic number.

25058778625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25058778625 is a deficient number, since it is larger than the sum of its proper divisors (6214577255).

25058778625 is an equidigital number, since it uses as much as digits as its factorization.

25058778625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200470244 (or 200470234 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 55.

The spelling of 25058778625 in words is "twenty-five billion, fifty-eight million, seven hundred seventy-eight thousand, six hundred twenty-five".