25820315345 has 32 divisors (see below), whose sum is σ = 33960795264. Its totient is φ = 18689932800.

The previous prime is 25820315303. The next prime is 25820315351. The reversal of 25820315345 is 54351302852.

It is not a de Polignac number, because 25820315345 - 2¹⁸ = 25820053201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25820315299 and 25820315308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18805079 + ... + 18806451.

It is an arithmetic number, because the mean of its divisors is an integer number (1061274852).

Almost surely, 2^25820315345 is an apocalyptic number.

It is an amenable number.

25820315345 is a deficient number, since it is larger than the sum of its proper divisors (8140479919).

25820315345 is a wasteful number, since it uses less digits than its factorization.

25820315345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 25820315345 in words is "twenty-five billion, eight hundred twenty million, three hundred fifteen thousand, three hundred forty-five".