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25057406287872 = 2163572163197
BaseRepresentation
bin1011011001010001000011…
…10011010000000000000000
310021201110112201122012200000
411230220201303100000000
511241020032002202442
6125143114042400000
75164223613126600
oct554504163200000
9107643481565600
1025057406287872
117a90871671312
122988362800000
1310c9b9865427a
14628adbc10c00
152d6c0226cd4c
hex16ca21cd0000

25057406287872 has 1224 divisors, whose sum is σ = 88306341098976. Its totient is φ = 7079218642944.

The previous prime is 25057406287861. The next prime is 25057406287891. The reversal of 25057406287872 is 27878260475052.

25057406287872 is a `hidden beast` number, since 2 + 50 + 574 + 0 + 6 + 2 + 8 + 7 + 8 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 127194955678 + ... + 127194955874.

Almost surely, 225057406287872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25057406287872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44153170549488).

25057406287872 is an abundant number, since it is smaller than the sum of its proper divisors (63248934811104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25057406287872 is an frugal number, since it uses more digits than its factorization.

25057406287872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 105369600, while the sum is 63.

The spelling of 25057406287872 in words is "twenty-five trillion, fifty-seven billion, four hundred six million, two hundred eighty-seven thousand, eight hundred seventy-two".