398687503625 has 16 divisors (see below), whose sum is σ = 497668803840. Its totient is φ = 318881542000.

The previous prime is 398687503589. The next prime is 398687503733. The reversal of 398687503625 is 526305786893.

It is not a de Polignac number, because 398687503625 - 2⁸ = 398687503369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246416 + ... + 926334.

It is an arithmetic number, because the mean of its divisors is an integer number (31104300240).

Almost surely, 2^398687503625 is an apocalyptic number.

It is an amenable number.

398687503625 is a deficient number, since it is larger than the sum of its proper divisors (98981300215).

398687503625 is an equidigital number, since it uses as much as digits as its factorization.

398687503625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684625 (or 684615 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 398687503625 in words is "three hundred ninety-eight billion, six hundred eighty-seven million, five hundred three thousand, six hundred twenty-five".