655670925 has 144 divisors (see below), whose sum is σ = 1493459968. Its totient is φ = 267494400.

The previous prime is 655670887. The next prime is 655670929. The reversal of 655670925 is 529076556.

655670925 is a `hidden beast` number, since 6 + 556 + 7 + 0 + 92 + 5 = 666.

It is not a de Polignac number, because 655670925 - 2⁸ = 655670669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655670929) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 634209 + ... + 635241.

Almost surely, 2^655670925 is an apocalyptic number.

655670925 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

655670925 is an abundant number, since it is smaller than the sum of its proper divisors (837789043).

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

655670925 is a wasteful number, since it uses less digits than its factorization.

655670925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 655670925 is about 25606.0720337970. The cubic root of 655670925 is about 868.7509821772.

The spelling of 655670925 in words is "six hundred fifty-five million, six hundred seventy thousand, nine hundred twenty-five".