25281031050825 has 24 divisors (see below), whose sum is σ = 45597786914976. Its totient is φ = 12257469600000.

The previous prime is 25281031050811. The next prime is 25281031050889. The reversal of 25281031050825 is 52805013018252.

It is a happy number.

It is not a de Polignac number, because 25281031050825 - 2¹³ = 25281031042633 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15321836176 + ... + 15321837825.

It is an arithmetic number, because the mean of its divisors is an integer number (1899907788124).

Almost surely, 2^{25281031050825} is an apocalyptic number.

25281031050825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25281031050825 is a deficient number, since it is larger than the sum of its proper divisors (20316755864151).

25281031050825 is a wasteful number, since it uses less digits than its factorization.

25281031050825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30643674025 (or 30643674020 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 25281031050825 in words is "twenty-five trillion, two hundred eighty-one billion, thirty-one million, fifty thousand, eight hundred twenty-five".