1655131225 has 12 divisors (see below), whose sum is σ = 2238941520. Its totient is φ = 1203731600.

The previous prime is 1655131201. The next prime is 1655131259. The reversal of 1655131225 is 5221315561.

It is not a de Polignac number, because 1655131225 - 2¹⁷ = 1655000153 is a prime.

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, 3009055 + ... + 3009604.

It is an arithmetic number, because the mean of its divisors is an integer number (186578460).

Almost surely, 2^1655131225 is an apocalyptic number.

It is an amenable number.

1655131225 is a deficient number, since it is larger than the sum of its proper divisors (583810295).

1655131225 is a wasteful number, since it uses less digits than its factorization.

1655131225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6018680 (or 6018675 counting only the distinct ones).

The product of its digits is 9000, while the sum is 31.

The square root of 1655131225 is about 40683.3040079097. The cubic root of 1655131225 is about 1182.8894107295.

Adding to 1655131225 its reverse (5221315561), we get a palindrome (6876446786).

The spelling of 1655131225 in words is "one billion, six hundred fifty-five million, one hundred thirty-one thousand, two hundred twenty-five".