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157025205 = 32510134549
BaseRepresentation
bin10010101110000…
…00001110110101
3101221110201002100
421113000032311
5310144301310
623325332313
73614456301
oct1127001665
9357421070
10157025205
11807003a7
1244707099
13266bb72c
1416bd6d01
15dbbaec0
hex95c03b5

157025205 has 24 divisors (see below), whose sum is σ = 274879800. Its totient is φ = 82915200.

The previous prime is 157025189. The next prime is 157025303. The reversal of 157025205 is 502520751.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 97950609 + 59074596 = 9897^2 + 7686^2 .

It is not a de Polignac number, because 157025205 - 24 = 157025189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12730 + ... + 21819.

It is an arithmetic number, because the mean of its divisors is an integer number (11453325).

Almost surely, 2157025205 is an apocalyptic number.

157025205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157025205 is a deficient number, since it is larger than the sum of its proper divisors (117854595).

157025205 is a wasteful number, since it uses less digits than its factorization.

157025205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34661 (or 34658 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 157025205 is about 12530.9698347734. The cubic root of 157025205 is about 539.4979387064.

Adding to 157025205 its reverse (502520751), we get a palindrome (659545956).

The spelling of 157025205 in words is "one hundred fifty-seven million, twenty-five thousand, two hundred five".

Divisors: 1 3 5 9 15 45 101 303 505 909 1515 4545 34549 103647 172745 310941 518235 1554705 3489449 10468347 17447245 31405041 52341735 157025205