25345683356543 has 16 divisors (see below), whose sum is σ = 27766136724480. Its totient is φ = 22944617623200.

The previous prime is 25345683356531. The next prime is 25345683356561. The reversal of 25345683356543 is 34565338654352.

It is a cyclic number.

It is not a de Polignac number, because 25345683356543 - 2⁴ = 25345683356527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25345683356593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173538278 + ... + 173684268.

It is an arithmetic number, because the mean of its divisors is an integer number (1735383545280).

Almost surely, 2^{25345683356543} is an apocalyptic number.

25345683356543 is a deficient number, since it is larger than the sum of its proper divisors (2420453367937).

25345683356543 is a wasteful number, since it uses less digits than its factorization.

25345683356543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212278.

The product of its digits is 466560000, while the sum is 62.

The spelling of 25345683356543 in words is "twenty-five trillion, three hundred forty-five billion, six hundred eighty-three million, three hundred fifty-six thousand, five hundred forty-three".