25280930825 has 12 divisors (see below), whose sum is σ = 31350714780. Its totient is φ = 20223221760.

The previous prime is 25280930791. The next prime is 25280930839. The reversal of 25280930825 is 52803908252.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6726132169 + 18554798656 = 82013^2 + 136216^2 .

It is not a de Polignac number, because 25280930825 - 2¹⁶ = 25280865289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398921 + ... + 457929.

It is an arithmetic number, because the mean of its divisors is an integer number (2612559565).

Almost surely, 2^25280930825 is an apocalyptic number.

25280930825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25280930825 is a deficient number, since it is larger than the sum of its proper divisors (6069783955).

25280930825 is a wasteful number, since it uses less digits than its factorization.

25280930825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76156 (or 76151 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 25280930825 in words is "twenty-five billion, two hundred eighty million, nine hundred thirty thousand, eight hundred twenty-five".