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80411525 = 524636947
BaseRepresentation
bin1001100101011…
…11101110000101
312121022022212122
410302233232011
5131041132100
611551255325
71664325635
oct462575605
9177268778
1080411525
1141432407
1222b1a545
13138757ac
14a9726c5
1570d5985
hex4cafb85

80411525 has 12 divisors (see below), whose sum is σ = 99940032. Its totient is φ = 64181040.

The previous prime is 80411521. The next prime is 80411531. The reversal of 80411525 is 52511408.

It is not a de Polignac number, because 80411525 - 22 = 80411521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80411494 and 80411503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80411521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8102 + ... + 15048.

It is an arithmetic number, because the mean of its divisors is an integer number (8328336).

Almost surely, 280411525 is an apocalyptic number.

It is an amenable number.

80411525 is a deficient number, since it is larger than the sum of its proper divisors (19528507).

80411525 is a wasteful number, since it uses less digits than its factorization.

80411525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420 (or 7415 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 80411525 is about 8967.2473479881. The cubic root of 80411525 is about 431.6245111874.

The spelling of 80411525 in words is "eighty million, four hundred eleven thousand, five hundred twenty-five".

Divisors: 1 5 25 463 2315 6947 11575 34735 173675 3216461 16082305 80411525