628087825 has 12 divisors (see below), whose sum is σ = 781342848. Its totient is φ = 500848400.

The previous prime is 628087783. The next prime is 628087843. The reversal of 628087825 is 528780826.

It is a happy number.

It is not a de Polignac number, because 628087825 - 2²⁹ = 91216913 is a prime.

It is a super-3 number, since 3×628087825³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32617 + ... + 48166.

It is an arithmetic number, because the mean of its divisors is an integer number (65111904).

Almost surely, 2^628087825 is an apocalyptic number.

It is an amenable number.

628087825 is a deficient number, since it is larger than the sum of its proper divisors (153255023).

628087825 is a wasteful number, since it uses less digits than its factorization.

628087825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81104 (or 81099 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 628087825 is about 25061.6804105391. The cubic root of 628087825 is about 856.3936892785.

The spelling of 628087825 in words is "six hundred twenty-eight million, eighty-seven thousand, eight hundred twenty-five".