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12153030125 = 53175719073
BaseRepresentation
bin10110101000110000…
…01000010111101101
31011100222001220012212
423110120020113231
5144342133431000
65325533340205
7610110023465
oct132430102755
934328056185
1012153030125
115177083455
122432037665
1311b8a849b2
14834094ba5
154b1decc35
hex2d46085ed

12153030125 has 16 divisors (see below), whose sum is σ = 16059159792. Its totient is φ = 9150515200.

The previous prime is 12153030119. The next prime is 12153030133. The reversal of 12153030125 is 52103035121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5648123716 + 6504906409 = 75154^2 + 80653^2 .

It is not a de Polignac number, because 12153030125 - 222 = 12148835821 is a prime.

It is a super-2 number, since 2×121530301252 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12153030125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2857412 + ... + 2861661.

It is an arithmetic number, because the mean of its divisors is an integer number (1003697487).

Almost surely, 212153030125 is an apocalyptic number.

It is an amenable number.

12153030125 is a deficient number, since it is larger than the sum of its proper divisors (3906129667).

12153030125 is an equidigital number, since it uses as much as digits as its factorization.

12153030125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719105 (or 5719095 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 12153030125 its reverse (52103035121), we get a palindrome (64256065246).

The spelling of 12153030125 in words is "twelve billion, one hundred fifty-three million, thirty thousand, one hundred twenty-five".

Divisors: 1 5 17 25 85 125 425 2125 5719073 28595365 97224241 142976825 486121205 714884125 2430606025 12153030125