655225724 has 6 divisors (see below), whose sum is σ = 1146645024. Its totient is φ = 327612860.

The previous prime is 655225717. The next prime is 655225733. The reversal of 655225724 is 427522556.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81903212 + ... + 81903219.

It is an arithmetic number, because the mean of its divisors is an integer number (191107504).

Almost surely, 2^655225724 is an apocalyptic number.

It is an amenable number.

655225724 is a deficient number, since it is larger than the sum of its proper divisors (491419300).

655225724 is a wasteful number, since it uses less digits than its factorization.

655225724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163806435 (or 163806433 counting only the distinct ones).

The product of its digits is 168000, while the sum is 38.

The square root of 655225724 is about 25597.3772875269. The cubic root of 655225724 is about 868.5543101562.

The spelling of 655225724 in words is "six hundred fifty-five million, two hundred twenty-five thousand, seven hundred twenty-four".