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149695225 = 5224472
BaseRepresentation
bin10001110110000…
…10101011111001
3101102200022020121
420323002223321
5301310221400
622504253241
73465250141
oct1073025371
9342608217
10149695225
1177554269
1242171221
1325023274
1415c49921
15d21e21a
hex8ec2af9

149695225 has 9 divisors (see below), whose sum is σ = 185697967. Its totient is φ = 119707240.

The previous prime is 149695211. The next prime is 149695289. The reversal of 149695225 is 522596941.

The square root of 149695225 is 12235.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 53890281 + 95804944 = 7341^2 + 9788^2 .

It is not a de Polignac number, because 149695225 - 217 = 149564153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 59952 + ... + 62398.

Almost surely, 2149695225 is an apocalyptic number.

149695225 is the 12235-th square number.

149695225 is the 6118-th centered octagonal number.

It is an amenable number.

149695225 is a deficient number, since it is larger than the sum of its proper divisors (36002742).

149695225 is an frugal number, since it uses more digits than its factorization.

149695225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904 (or 2452 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The cubic root of 149695225 is about 530.9691830752.

It can be divided in two parts, 1496 and 95225, that added together give a square (96721 = 3112).

The spelling of 149695225 in words is "one hundred forty-nine million, six hundred ninety-five thousand, two hundred twenty-five".

Divisors: 1 5 25 2447 12235 61175 5987809 29939045 149695225