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25424421534 = 233470822621
BaseRepresentation
bin10111101011011010…
…011110001010011110
32102121212112102201000
4113223122132022132
5404032122442114
615402501331130
71560020005641
oct275332361236
972555472630
1025424421534
11a867472226
124b16706aa6
132522448915
1413328a7a58
159dc0abe09
hex5eb69e29e

25424421534 has 16 divisors (see below), whose sum is σ = 56498714640. Its totient is φ = 8474807160.

The previous prime is 25424421427. The next prime is 25424421571. The reversal of 25424421534 is 43512442452.

25424421534 is a `hidden beast` number, since 2 + 542 + 44 + 21 + 53 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235411257 + ... + 235411364.

It is an arithmetic number, because the mean of its divisors is an integer number (3531169665).

Almost surely, 225424421534 is an apocalyptic number.

25424421534 is an abundant number, since it is smaller than the sum of its proper divisors (31074293106).

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

25424421534 is a wasteful number, since it uses less digits than its factorization.

25424421534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470822632 (or 470822626 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

Adding to 25424421534 its reverse (43512442452), we get a palindrome (68936863986).

The spelling of 25424421534 in words is "twenty-five billion, four hundred twenty-four million, four hundred twenty-one thousand, five hundred thirty-four".

Divisors: 1 2 3 6 9 18 27 54 470822621 941645242 1412467863 2824935726 4237403589 8474807178 12712210767 25424421534