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47871252025 = 52437592
BaseRepresentation
bin101100100101010110…
…010101011000111001
311120120020012120101021
4230211112111120321
51241020020031100
633554115022441
73313202633302
oct544526253071
9146506176337
1047871252025
111933608a203
12933bb9aa21
13468ba27a3c
142461b1d7a9
1513a2a4ea1a
hexb25595639

47871252025 has 9 divisors (see below), whose sum is σ = 59361709071. Its totient is φ = 38296126440.

The previous prime is 47871251993. The next prime is 47871252029. The reversal of 47871252025 is 52025217874.

The square root of 47871252025 is 218795.

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

47871252025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 17233650729 + 30637601296 = 131277^2 + 175036^2 .

It is not a de Polignac number, because 47871252025 - 25 = 47871251993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47871252029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1072096 + ... + 1115854.

Almost surely, 247871252025 is an apocalyptic number.

47871252025 is the 218795-th square number.

47871252025 is the 109398-th centered octagonal number.

It is an amenable number.

47871252025 is a deficient number, since it is larger than the sum of its proper divisors (11490457046).

47871252025 is an frugal number, since it uses more digits than its factorization.

47871252025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87528 (or 43764 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 43.

Adding to 47871252025 its reverse (52025217874), we get a palindrome (99896469899).

The spelling of 47871252025 in words is "forty-seven billion, eight hundred seventy-one million, two hundred fifty-two thousand, twenty-five".

Divisors: 1 5 25 43759 218795 1093975 1914850081 9574250405 47871252025