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130525251 = 3473832417
BaseRepresentation
bin1111100011110…
…10100001000011
3100002121100222120
413301322201003
5231403302001
620541335323
73143306043
oct761724103
9302540876
10130525251
116775060a
1237867543
132107089c
1413499723
15b6d4236
hex7c7a843

130525251 has 16 divisors (see below), whose sum is σ = 178274304. Its totient is φ = 84907904.

The previous prime is 130525183. The next prime is 130525277. The reversal of 130525251 is 152525031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 130525251 - 27 = 130525123 is a prime.

It is a super-2 number, since 2×1305252512 = 34073682297226002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130515251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52795 + ... + 55211.

It is an arithmetic number, because the mean of its divisors is an integer number (11142144).

Almost surely, 2130525251 is an apocalyptic number.

130525251 is a deficient number, since it is larger than the sum of its proper divisors (47749053).

130525251 is a wasteful number, since it uses less digits than its factorization.

130525251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 130525251 is about 11424.7648115837. The cubic root of 130525251 is about 507.2610453444.

The spelling of 130525251 in words is "one hundred thirty million, five hundred twenty-five thousand, two hundred fifty-one".

Divisors: 1 3 47 141 383 1149 2417 7251 18001 54003 113599 340797 925711 2777133 43508417 130525251