206380407986425 has 24 divisors (see below), whose sum is σ = 258552459396000. Its totient is φ = 163400647226880.

The previous prime is 206380407986419. The next prime is 206380407986449. The reversal of 206380407986425 is 524689704083602.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-206380407986425 is a prime.

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, 295741566 + ... + 296438584.

It is an arithmetic number, because the mean of its divisors is an integer number (10773019141500).

Almost surely, 2^{206380407986425} is an apocalyptic number.

206380407986425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206380407986425 is a deficient number, since it is larger than the sum of its proper divisors (52172051409575).

206380407986425 is a wasteful number, since it uses less digits than its factorization.

206380407986425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819225 (or 819220 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 64.

The spelling of 206380407986425 in words is "two hundred six trillion, three hundred eighty billion, four hundred seven million, nine hundred eighty-six thousand, four hundred twenty-five".