394145858925 has 384 divisors, whose sum is σ = 984656977920. Its totient is φ = 149722214400.

The previous prime is 394145858849. The next prime is 394145858989. The reversal of 394145858925 is 529858541493.

394145858925 is a `hidden beast` number, since 3 + 9 + 4 + 1 + 45 + 8 + 589 + 2 + 5 = 666.

It is not a de Polignac number, because 394145858925 - 2⁸ = 394145858669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 24008970 + ... + 24025380.

It is an arithmetic number, because the mean of its divisors is an integer number (2564210880).

Almost surely, 2^394145858925 is an apocalyptic number.

394145858925 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

394145858925 is an abundant number, since it is smaller than the sum of its proper divisors (590511118995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394145858925 is a wasteful number, since it uses less digits than its factorization.

394145858925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16490 (or 16479 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 63.

The spelling of 394145858925 in words is "three hundred ninety-four billion, one hundred forty-five million, eight hundred fifty-eight thousand, nine hundred twenty-five".