655023125 has 20 divisors (see below), whose sum is σ = 822561696. Its totient is φ = 521430000.

The previous prime is 655023091. The next prime is 655023137. The reversal of 655023125 is 521320556.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-655023125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 129392 + ... + 134358.

Almost surely, 2^655023125 is an apocalyptic number.

It is an amenable number.

655023125 is a deficient number, since it is larger than the sum of its proper divisors (167538571).

655023125 is an equidigital number, since it uses as much as digits as its factorization.

655023125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198 (or 5183 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 655023125 is about 25593.4195644115. The cubic root of 655023125 is about 868.4647805136.

The spelling of 655023125 in words is "six hundred fifty-five million, twenty-three thousand, one hundred twenty-five".