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25025070 = 2357269443
BaseRepresentation
bin101111101110…
…1101000101110
31202002101221110
41133131220232
522401300240
62252212450
7422465250
oct137355056
952071843
1025025070
1113142784
12846a126
135252745
143475cd0
1522e4c80
hex17dda2e

25025070 has 64 divisors (see below), whose sum is σ = 69050880. Its totient is φ = 5685888.

The previous prime is 25025069. The next prime is 25025083. The reversal of 25025070 is 7052052.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56269 + ... + 56711.

It is an arithmetic number, because the mean of its divisors is an integer number (1078920).

Almost surely, 225025070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25025070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34525440).

25025070 is an abundant number, since it is smaller than the sum of its proper divisors (44025810).

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

25025070 is a wasteful number, since it uses less digits than its factorization.

25025070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 25025070 is about 5002.5063718100. The cubic root of 25025070 is about 292.4994813345.

The spelling of 25025070 in words is "twenty-five million, twenty-five thousand, seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 269 443 538 807 886 1329 1345 1614 1883 2215 2658 2690 3101 3766 4035 4430 5649 6202 6645 8070 9303 9415 11298 13290 15505 18606 18830 28245 31010 46515 56490 93030 119167 238334 357501 595835 715002 834169 1191670 1668338 1787505 2502507 3575010 4170845 5005014 8341690 12512535 25025070